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Class   398OPTICAL COMMUNICATIONS
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[List of Pre Grant Publications for class 398 subclass 1][List of Patents for class 398 subclass 1]1 FAULT RECOVERY
[List of Pre Grant Publications for class 398 subclass 2][List of Patents for class 398 subclass 2]2 Subclass 2 indent level is 1 Bypass inoperative element
[List of Pre Grant Publications for class 398 subclass 3][List of Patents for class 398 subclass 3]3 Subclass 3 indent level is 2 In a ring or loop
 [List of Pre Grant Publications for class 398 subclass 5][List of Patents for class 398 subclass 5]5 Subclass 5 indent level is 2 Spare channel or standby optical fiber
 [List of Pre Grant Publications for class 398 subclass 6][List of Patents for class 398 subclass 6]6 Subclass 6 indent level is 1 In a repeater system
 [List of Pre Grant Publications for class 398 subclass 7][List of Patents for class 398 subclass 7]7 Subclass 7 indent level is 1 WDM
 [List of Pre Grant Publications for class 398 subclass 8][List of Patents for class 398 subclass 8]8 Subclass 8 indent level is 1 TDM
[List of Pre Grant Publications for class 398 subclass 9][List of Patents for class 398 subclass 9]9 DIAGNOSTIC TESTING
[List of Pre Grant Publications for class 398 subclass 10][List of Patents for class 398 subclass 10]10 Subclass 10 indent level is 1 Fault location
 [List of Pre Grant Publications for class 398 subclass 11][List of Patents for class 398 subclass 11]11 Subclass 11 indent level is 2 Repeater
 [List of Pre Grant Publications for class 398 subclass 12][List of Patents for class 398 subclass 12]12 Subclass 12 indent level is 2 Switch
 [List of Pre Grant Publications for class 398 subclass 13][List of Patents for class 398 subclass 13]13 Subclass 13 indent level is 2 Fiber or waveguide
 [List of Pre Grant Publications for class 398 subclass 14][List of Patents for class 398 subclass 14]14 Subclass 14 indent level is 2 WDM
 [List of Pre Grant Publications for class 398 subclass 15][List of Patents for class 398 subclass 15]15 Subclass 15 indent level is 2 Stop transmission or reduce power
 [List of Pre Grant Publications for class 398 subclass 16][List of Patents for class 398 subclass 16]16 Subclass 16 indent level is 1 Test signal
[List of Pre Grant Publications for class 398 subclass 17][List of Patents for class 398 subclass 17]17 Subclass 17 indent level is 1 Fault detection
 [List of Pre Grant Publications for class 398 subclass 18][List of Patents for class 398 subclass 18]18 Subclass 18 indent level is 2 Repeater
 [List of Pre Grant Publications for class 398 subclass 19][List of Patents for class 398 subclass 19]19 Subclass 19 indent level is 2 Switch
[List of Pre Grant Publications for class 398 subclass 20][List of Patents for class 398 subclass 20]20 Subclass 20 indent level is 2 Optical fiber
 [List of Pre Grant Publications for class 398 subclass 22][List of Patents for class 398 subclass 22]22 Subclass 22 indent level is 2 Transceiver
 [List of Pre Grant Publications for class 398 subclass 23][List of Patents for class 398 subclass 23]23 Subclass 23 indent level is 2 Transmitter
 [List of Pre Grant Publications for class 398 subclass 24][List of Patents for class 398 subclass 24]24 Subclass 24 indent level is 2 Receiver
[List of Pre Grant Publications for class 398 subclass 25][List of Patents for class 398 subclass 25]25 Subclass 25 indent level is 1 Determination of communication parameter
 [List of Pre Grant Publications for class 398 subclass 26][List of Patents for class 398 subclass 26]26 Subclass 26 indent level is 2 Signal to noise ratio
 [List of Pre Grant Publications for class 398 subclass 27][List of Patents for class 398 subclass 27]27 Subclass 27 indent level is 2 Bit error rate
[List of Pre Grant Publications for class 398 subclass 28][List of Patents for class 398 subclass 28]28 Subclass 28 indent level is 2 Fiber characteristic
[List of Pre Grant Publications for class 398 subclass 30][List of Patents for class 398 subclass 30]30 Subclass 30 indent level is 2 Using supervisory signal
 [List of Pre Grant Publications for class 398 subclass 34][List of Patents for class 398 subclass 34]34 Subclass 34 indent level is 2 WDM system
 [List of Pre Grant Publications for class 398 subclass 35][List of Patents for class 398 subclass 35]35 Subclass 35 indent level is 2 TDM system
 [List of Pre Grant Publications for class 398 subclass 36][List of Patents for class 398 subclass 36]36 Subclass 36 indent level is 2 Collision detection
 [List of Pre Grant Publications for class 398 subclass 37][List of Patents for class 398 subclass 37]37 Subclass 37 indent level is 2 Amplifier or repeater operation
 [List of Pre Grant Publications for class 398 subclass 38][List of Patents for class 398 subclass 38]38 Subclass 38 indent level is 2 Power
 [List of Pre Grant Publications for class 398 subclass 39][List of Patents for class 398 subclass 39]39 INTERFERENCE SIGNAL TRANSMISSION OR ELIMINATION (E.G., JAMMING OR ANTIJAMMING)
 [List of Pre Grant Publications for class 398 subclass 40][List of Patents for class 398 subclass 40]40 EAVESDROPPING
[List of Pre Grant Publications for class 398 subclass 41][List of Patents for class 398 subclass 41]41 DUPLEX
 [List of Pre Grant Publications for class 398 subclass 42][List of Patents for class 398 subclass 42]42 Subclass 42 indent level is 1 Wavelength division
[List of Pre Grant Publications for class 398 subclass 43][List of Patents for class 398 subclass 43]43 MULTIPLEX
 [List of Pre Grant Publications for class 398 subclass 44][List of Patents for class 398 subclass 44]44 Subclass 44 indent level is 1 Mode
[List of Pre Grant Publications for class 398 subclass 45][List of Patents for class 398 subclass 45]45 Subclass 45 indent level is 1 Optical switching
[List of Pre Grant Publications for class 398 subclass 46][List of Patents for class 398 subclass 46]46 Subclass 46 indent level is 2 Hybrid
[List of Pre Grant Publications for class 398 subclass 48][List of Patents for class 398 subclass 48]48 Subclass 48 indent level is 2 Wavelength
[List of Pre Grant Publications for class 398 subclass 52][List of Patents for class 398 subclass 52]52 Subclass 52 indent level is 2 Time
[List of Pre Grant Publications for class 398 subclass 55][List of Patents for class 398 subclass 55]55 Subclass 55 indent level is 2 space
[List of Pre Grant Publications for class 398 subclass 58][List of Patents for class 398 subclass 58]58 Subclass 58 indent level is 1 Optical local area network (LAN)
 [List of Pre Grant Publications for class 398 subclass 59][List of Patents for class 398 subclass 59]59 Subclass 59 indent level is 2 Ring or loop
 [List of Pre Grant Publications for class 398 subclass 60][List of Patents for class 398 subclass 60]60 Subclass 60 indent level is 2 Bus
[List of Pre Grant Publications for class 398 subclass 61][List of Patents for class 398 subclass 61]61 Subclass 61 indent level is 2 Active star
[List of Pre Grant Publications for class 398 subclass 63][List of Patents for class 398 subclass 63]63 Subclass 63 indent level is 2 Passive star
 [List of Pre Grant Publications for class 398 subclass 65][List of Patents for class 398 subclass 65]65 Subclass 65 indent level is 1 Polarization
[List of Pre Grant Publications for class 398 subclass 66][List of Patents for class 398 subclass 66]66 Subclass 66 indent level is 1 Broadcast and distribution system
 [List of Pre Grant Publications for class 398 subclass 67][List of Patents for class 398 subclass 67]67 Subclass 67 indent level is 2 Bidirectional
[List of Pre Grant Publications for class 398 subclass 68][List of Patents for class 398 subclass 68]68 Subclass 68 indent level is 2 WDM
[List of Pre Grant Publications for class 398 subclass 74][List of Patents for class 398 subclass 74]74 Subclass 74 indent level is 1 Hybrid
 [List of Pre Grant Publications for class 398 subclass 75][List of Patents for class 398 subclass 75]75 Subclass 75 indent level is 2 Time and wavelength division
 [List of Pre Grant Publications for class 398 subclass 76][List of Patents for class 398 subclass 76]76 Subclass 76 indent level is 1 Subcarrier multiplexing
[List of Pre Grant Publications for class 398 subclass 77][List of Patents for class 398 subclass 77]77 Subclass 77 indent level is 1 Code division multiplexing
 [List of Pre Grant Publications for class 398 subclass 78][List of Patents for class 398 subclass 78]78 Subclass 78 indent level is 2 Multiple Access (e.g., CDMA)
[List of Pre Grant Publications for class 398 subclass 79][List of Patents for class 398 subclass 79]79 Subclass 79 indent level is 1 Wavelength division or frequency division (e.g., Raman, Brillouin, etc.)
 [List of Pre Grant Publications for class 398 subclass 80][List of Patents for class 398 subclass 80]80 Subclass 80 indent level is 2 Soliton
 [List of Pre Grant Publications for class 398 subclass 81][List of Patents for class 398 subclass 81]81 Subclass 81 indent level is 2 Dispersion compensation
[List of Pre Grant Publications for class 398 subclass 82][List of Patents for class 398 subclass 82]82 Subclass 82 indent level is 2 By optical coupling
 [List of Pre Grant Publications for class 398 subclass 89][List of Patents for class 398 subclass 89]89 Subclass 89 indent level is 2 Multiple Access (e.g., WDMA)
 [List of Pre Grant Publications for class 398 subclass 90][List of Patents for class 398 subclass 90]90 Subclass 90 indent level is 2 Electrically controlled single source
[List of Pre Grant Publications for class 398 subclass 91][List of Patents for class 398 subclass 91]91 Subclass 91 indent level is 2 Different sources
[List of Pre Grant Publications for class 398 subclass 93][List of Patents for class 398 subclass 93]93 Subclass 93 indent level is 2 Including feedback
 [List of Pre Grant Publications for class 398 subclass 96][List of Patents for class 398 subclass 96]96 Subclass 96 indent level is 2 Through free space
 [List of Pre Grant Publications for class 398 subclass 97][List of Patents for class 398 subclass 97]97 Subclass 97 indent level is 2 Repeater
[List of Pre Grant Publications for class 398 subclass 98][List of Patents for class 398 subclass 98]98 Subclass 98 indent level is 1 Time division
 [List of Pre Grant Publications for class 398 subclass 99][List of Patents for class 398 subclass 99]99 Subclass 99 indent level is 2 Multiple access (e.g., TDMA, CSMA)
 [List of Pre Grant Publications for class 398 subclass 100][List of Patents for class 398 subclass 100]100 Subclass 100 indent level is 2 Subscriber system
 [List of Pre Grant Publications for class 398 subclass 101][List of Patents for class 398 subclass 101]101 Subclass 101 indent level is 2 By specific optical element
 [List of Pre Grant Publications for class 398 subclass 102][List of Patents for class 398 subclass 102]102 Subclass 102 indent level is 2 Including delay
 [List of Pre Grant Publications for class 398 subclass 103][List of Patents for class 398 subclass 103]103 Subclass 103 indent level is 2 Through free space
[List of Pre Grant Publications for class 398 subclass 104][List of Patents for class 398 subclass 104]104 UNDERWATER
 [List of Pre Grant Publications for class 398 subclass 105][List of Patents for class 398 subclass 105]105 Subclass 105 indent level is 1 Cable repeater
[List of Pre Grant Publications for class 398 subclass 106][List of Patents for class 398 subclass 106]106 REMOTE CONTROL
[List of Pre Grant Publications for class 398 subclass 107][List of Patents for class 398 subclass 107]107 Subclass 107 indent level is 1 Bidirectional (i.e., monitoring or acknowledge)
 [List of Pre Grant Publications for class 398 subclass 108][List of Patents for class 398 subclass 108]108 Subclass 108 indent level is 2 Interrogator system
[List of Pre Grant Publications for class 398 subclass 109][List of Patents for class 398 subclass 109]109 Subclass 109 indent level is 1 In industrial environment or hazardous environmrnt
 [List of Pre Grant Publications for class 398 subclass 110][List of Patents for class 398 subclass 110]110 Subclass 110 indent level is 2 Through optical fiber or waveguide
 [List of Pre Grant Publications for class 398 subclass 111][List of Patents for class 398 subclass 111]111 Subclass 111 indent level is 1 Switching
 [List of Pre Grant Publications for class 398 subclass 112][List of Patents for class 398 subclass 112]112 Subclass 112 indent level is 1 Plural
 [List of Pre Grant Publications for class 398 subclass 113][List of Patents for class 398 subclass 113]113 Subclass 113 indent level is 1 Through optical fiber or waveguide
 [List of Pre Grant Publications for class 398 subclass 114][List of Patents for class 398 subclass 114]114 Subclass 114 indent level is 1 Rotating part
[List of Pre Grant Publications for class 398 subclass 115][List of Patents for class 398 subclass 115]115 HYBRID COMMUNICATION SYSTEM (E.G., OPTICAL AND RF)
[List of Pre Grant Publications for class 398 subclass 116][List of Patents for class 398 subclass 116]116 Subclass 116 indent level is 1 Including specific optical interface
 [List of Pre Grant Publications for class 398 subclass 117][List of Patents for class 398 subclass 117]117 Subclass 117 indent level is 2 Housing or mounting
[List of Pre Grant Publications for class 398 subclass 118][List of Patents for class 398 subclass 118]118 OPTICAL COMMUNICATION OVER FREEE SPACE
[List of Pre Grant Publications for class 398 subclass 119][List of Patents for class 398 subclass 119]119 Subclass 119 indent level is 1 Compensation
 [List of Pre Grant Publications for class 398 subclass 120][List of Patents for class 398 subclass 120]120 Subclass 120 indent level is 2 Power control
[List of Pre Grant Publications for class 398 subclass 121][List of Patents for class 398 subclass 121]121 Subclass 121 indent level is 1 Satellite system
[List of Pre Grant Publications for class 398 subclass 122][List of Patents for class 398 subclass 122]122 Subclass 122 indent level is 2 Including alignment
 [List of Pre Grant Publications for class 398 subclass 124][List of Patents for class 398 subclass 124]124 Subclass 124 indent level is 2 Space to space
 [List of Pre Grant Publications for class 398 subclass 125][List of Patents for class 398 subclass 125]125 Subclass 125 indent level is 2 Space to ground or ground to space
 [List of Pre Grant Publications for class 398 subclass 126][List of Patents for class 398 subclass 126]126 Subclass 126 indent level is 1 Specific repeater
 [List of Pre Grant Publications for class 398 subclass 127][List of Patents for class 398 subclass 127]127 Subclass 127 indent level is 1 In an office environment
[List of Pre Grant Publications for class 398 subclass 128][List of Patents for class 398 subclass 128]128 Subclass 128 indent level is 1 Transceivers
 [List of Pre Grant Publications for class 398 subclass 129][List of Patents for class 398 subclass 129]129 Subclass 129 indent level is 2 Including alignment
[List of Pre Grant Publications for class 398 subclass 130][List of Patents for class 398 subclass 130]130 Subclass 130 indent level is 1 Transmitter and receiver
 [List of Pre Grant Publications for class 398 subclass 131][List of Patents for class 398 subclass 131]131 Subclass 131 indent level is 2 Including alignment
[List of Pre Grant Publications for class 398 subclass 132][List of Patents for class 398 subclass 132]132 PHOTOPHONE
[List of Pre Grant Publications for class 398 subclass 133][List of Patents for class 398 subclass 133]133 Subclass 133 indent level is 1 Specific transducer
 [List of Pre Grant Publications for class 398 subclass 134][List of Patents for class 398 subclass 134]134 Subclass 134 indent level is 2 Including optical fiber or waveguide
[List of Pre Grant Publications for class 398 subclass 135][List of Patents for class 398 subclass 135]135 OPTICAL TRANSCEIVER
 [List of Pre Grant Publications for class 398 subclass 136][List of Patents for class 398 subclass 136]136 Subclass 136 indent level is 1 Including compensation
 [List of Pre Grant Publications for class 398 subclass 137][List of Patents for class 398 subclass 137]137 Subclass 137 indent level is 1 Including feedback
 [List of Pre Grant Publications for class 398 subclass 138][List of Patents for class 398 subclass 138]138 Subclass 138 indent level is 1 Single device as transmitter and receiver
 [List of Pre Grant Publications for class 398 subclass 139][List of Patents for class 398 subclass 139]139 Subclass 139 indent level is 1 Including optical fiber or waveguide
[List of Pre Grant Publications for class 398 subclass 140][List of Patents for class 398 subclass 140]140 TRANSMITTER AND RECEIVER SYSTEM
[List of Pre Grant Publications for class 398 subclass 141][List of Patents for class 398 subclass 141]141 Subclass 141 indent level is 1 Including optical waveguide
[List of Pre Grant Publications for class 398 subclass 142][List of Patents for class 398 subclass 142]142 Subclass 142 indent level is 2 Specific type of fiber or waveguide
 [List of Pre Grant Publications for class 398 subclass 146][List of Patents for class 398 subclass 146]146 Subclass 146 indent level is 2 Soliton
[List of Pre Grant Publications for class 398 subclass 147][List of Patents for class 398 subclass 147]147 Subclass 147 indent level is 2 Dispersion compensation
 [List of Pre Grant Publications for class 398 subclass 151][List of Patents for class 398 subclass 151]151 Subclass 151 indent level is 1 Presence detection
 [List of Pre Grant Publications for class 398 subclass 152][List of Patents for class 398 subclass 152]152 Subclass 152 indent level is 1 Including polarization
 [List of Pre Grant Publications for class 398 subclass 153][List of Patents for class 398 subclass 153]153 Subclass 153 indent level is 1 One transmitter, plural receivers
[List of Pre Grant Publications for class 398 subclass 154][List of Patents for class 398 subclass 154]154 Subclass 154 indent level is 1 Including synchronization
 [List of Pre Grant Publications for class 398 subclass 155][List of Patents for class 398 subclass 155]155 Subclass 155 indent level is 2 Clock recovery
 [List of Pre Grant Publications for class 398 subclass 156][List of Patents for class 398 subclass 156]156 Subclass 156 indent level is 1 Including alignment between transmitter and receiver
 [List of Pre Grant Publications for class 398 subclass 157][List of Patents for class 398 subclass 157]157 Subclass 157 indent level is 1 Including pumping
[List of Pre Grant Publications for class 398 subclass 158][List of Patents for class 398 subclass 158]158 Subclass 158 indent level is 1 Including compensation
 [List of Pre Grant Publications for class 398 subclass 159][List of Patents for class 398 subclass 159]159 Subclass 159 indent level is 2 Reducing distortion or dispersion
 [List of Pre Grant Publications for class 398 subclass 160][List of Patents for class 398 subclass 160]160 Subclass 160 indent level is 2 Using optical amplifier
 [List of Pre Grant Publications for class 398 subclass 161][List of Patents for class 398 subclass 161]161 Subclass 161 indent level is 2 Using delay
 [List of Pre Grant Publications for class 398 subclass 162][List of Patents for class 398 subclass 162]162 Subclass 162 indent level is 1 Including feedback from receiver
 [List of Pre Grant Publications for class 398 subclass 163][List of Patents for class 398 subclass 163]163 Subclass 163 indent level is 1 Including electrical oscillator
 [List of Pre Grant Publications for class 398 subclass 164][List of Patents for class 398 subclass 164]164 Subclass 164 indent level is 1 Including optical circuit board
[List of Pre Grant Publications for class 398 subclass 165][List of Patents for class 398 subclass 165]165 Subclass 165 indent level is 1 Plural stations
 [List of Pre Grant Publications for class 398 subclass 166][List of Patents for class 398 subclass 166]166 Subclass 166 indent level is 2 Address directing connections
 [List of Pre Grant Publications for class 398 subclass 167][List of Patents for class 398 subclass 167]167 Subclass 167 indent level is 2 Unidirectional or loopback
 [List of Pre Grant Publications for class 398 subclass 167.5][List of Patents for class 398 subclass 167.5]167.5 Subclass 167.5 indent level is 2 Central or master station
[List of Pre Grant Publications for class 398 subclass 168][List of Patents for class 398 subclass 168]168 Subclass 168 indent level is 1 Passive system
 [List of Pre Grant Publications for class 398 subclass 169][List of Patents for class 398 subclass 169]169 Subclass 169 indent level is 2 Retroreflection
 [List of Pre Grant Publications for class 398 subclass 170][List of Patents for class 398 subclass 170]170 Subclass 170 indent level is 1 Retroreflection
 [List of Pre Grant Publications for class 398 subclass 171][List of Patents for class 398 subclass 171]171 Subclass 171 indent level is 1 Received signal supplies power distribution to diverse devices
 [List of Pre Grant Publications for class 398 subclass 172][List of Patents for class 398 subclass 172]172 Subclass 172 indent level is 1 Including visible light modulation
[List of Pre Grant Publications for class 398 subclass 173][List of Patents for class 398 subclass 173]173 OPTICAL REPEATER SYSTEM
 [List of Pre Grant Publications for class 398 subclass 174][List of Patents for class 398 subclass 174]174 Subclass 174 indent level is 1 Demodulating
[List of Pre Grant Publications for class 398 subclass 175][List of Patents for class 398 subclass 175]175 Subclass 175 indent level is 1 Regenerative
 [List of Pre Grant Publications for class 398 subclass 176][List of Patents for class 398 subclass 176]176 Subclass 176 indent level is 2 Modulation conversion
 [List of Pre Grant Publications for class 398 subclass 177][List of Patents for class 398 subclass 177]177 Subclass 177 indent level is 1 Monitoring
[List of Pre Grant Publications for class 398 subclass 178][List of Patents for class 398 subclass 178]178 Subclass 178 indent level is 1 Specific optical waveguide
 [List of Pre Grant Publications for class 398 subclass 179][List of Patents for class 398 subclass 179]179 Subclass 179 indent level is 2 Soliton
 [List of Pre Grant Publications for class 398 subclass 180][List of Patents for class 398 subclass 180]180 Subclass 180 indent level is 1 Specific optical elements
 [List of Pre Grant Publications for class 398 subclass 181][List of Patents for class 398 subclass 181]181 Subclass 181 indent level is 1 Supervisory signal by repeater
[List of Pre Grant Publications for class 398 subclass 182][List of Patents for class 398 subclass 182]182 TRANSMITTER
[List of Pre Grant Publications for class 398 subclass 183][List of Patents for class 398 subclass 183]183 Subclass 183 indent level is 1 Having particular modulation
 [List of Pre Grant Publications for class 398 subclass 184][List of Patents for class 398 subclass 184]184 Subclass 184 indent level is 2 Including polarization
 [List of Pre Grant Publications for class 398 subclass 185][List of Patents for class 398 subclass 185]185 Subclass 185 indent level is 2 Hybrid modulation
 [List of Pre Grant Publications for class 398 subclass 186][List of Patents for class 398 subclass 186]186 Subclass 186 indent level is 2 Intensity modulation
 [List of Pre Grant Publications for class 398 subclass 187][List of Patents for class 398 subclass 187]187 Subclass 187 indent level is 2 Frequency modulation
 [List of Pre Grant Publications for class 398 subclass 188][List of Patents for class 398 subclass 188]188 Subclass 188 indent level is 2 Phase modulation
[List of Pre Grant Publications for class 398 subclass 189][List of Patents for class 398 subclass 189]189 Subclass 189 indent level is 2 Pulse modulation
[List of Pre Grant Publications for class 398 subclass 192][List of Patents for class 398 subclass 192]192 Subclass 192 indent level is 1 Including compensation
 [List of Pre Grant Publications for class 398 subclass 193][List of Patents for class 398 subclass 193]193 Subclass 193 indent level is 2 Precompensation (e.g., prechirping, predistortion
 [List of Pre Grant Publications for class 398 subclass 194][List of Patents for class 398 subclass 194]194 Subclass 194 indent level is 2 For noise or distortion
[List of Pre Grant Publications for class 398 subclass 195][List of Patents for class 398 subclass 195]195 Subclass 195 indent level is 2 Including feedback
 [List of Pre Grant Publications for class 398 subclass 199][List of Patents for class 398 subclass 199]199 Subclass 199 indent level is 1 Chirping
 [List of Pre Grant Publications for class 398 subclass 200][List of Patents for class 398 subclass 200]200 Subclass 200 indent level is 1 Including optical waveguide
 [List of Pre Grant Publications for class 398 subclass 201][List of Patents for class 398 subclass 201]201 Subclass 201 indent level is 1 Including specific optical elements
[List of Pre Grant Publications for class 398 subclass 202][List of Patents for class 398 subclass 202]202 RECEIVER
 [List of Pre Grant Publications for class 398 subclass 203][List of Patents for class 398 subclass 203]203 Subclass 203 indent level is 1 Homodyne
[List of Pre Grant Publications for class 398 subclass 204][List of Patents for class 398 subclass 204]204 Subclass 204 indent level is 1 Heterodyne
[List of Pre Grant Publications for class 398 subclass 205][List of Patents for class 398 subclass 205]205 Subclass 205 indent level is 2 Including polarization
 [List of Pre Grant Publications for class 398 subclass 207][List of Patents for class 398 subclass 207]207 Subclass 207 indent level is 2 Specific optical elements
[List of Pre Grant Publications for class 398 subclass 208][List of Patents for class 398 subclass 208]208 Subclass 208 indent level is 1 Including postcompensation
 [List of Pre Grant Publications for class 398 subclass 209][List of Patents for class 398 subclass 209]209 Subclass 209 indent level is 2 Feedback
 [List of Pre Grant Publications for class 398 subclass 210][List of Patents for class 398 subclass 210]210 Subclass 210 indent level is 2 Amplitude
 [List of Pre Grant Publications for class 398 subclass 211][List of Patents for class 398 subclass 211]211 Subclass 211 indent level is 2 Intermodulation
[List of Pre Grant Publications for class 398 subclass 212][List of Patents for class 398 subclass 212]212 Subclass 212 indent level is 1 Including optical element (e.g., lens, mirror, etc.)
 [List of Pre Grant Publications for class 398 subclass 213][List of Patents for class 398 subclass 213]213 Subclass 213 indent level is 2 Having feedback
 [List of Pre Grant Publications for class 398 subclass 214][List of Patents for class 398 subclass 214]214 Subclass 214 indent level is 1 Including optical waveguide
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
Any foreign patents or non-patent literature from subclasses that have been reclassified have been transferred directly to FOR Collections listed below. These Collections contain ONLY foreign patents or non-patent literature. The parenthetical references in the Collection titles refer to the abolished subclasses from which these Collections were derived.
  FOR100          OPTICAL COMMUNICATION (359/109)
      FOR101          Subclass FOR101 indent level is 1 Diagnostic testing of optical communication (359/110)
      FOR102          Subclass FOR102 indent level is 1 Interference signal transmission or elimination (e.g., jamming or antijamming (359/111)
      FOR103          Subclass FOR103 indent level is 1 Eavesdropping (359/112)
  FOR104          Subclass FOR104 indent level is 1 Duplex (359/113)
      FOR105          Subclass FOR105 indent level is 2 Wavelength division (359/114)
  FOR106          Subclass FOR106 indent level is 1 Multiplex (359/115)
      FOR107          Subclass FOR107 indent level is 2 Mode (359/116)
      FOR108          Subclass FOR108 indent level is 2 Spatial or switching (359/117)
  FOR109          Subclass FOR109 indent level is 2 Optical local area network (LAN) (359/118)
      FOR110          Subclass FOR110 indent level is 3 Loop (359/119)
      FOR111          Subclass FOR111 indent level is 3 Active star (359/120)
      FOR112          Subclass FOR112 indent level is 3 Passive star (359/121)
      FOR113          Subclass FOR113 indent level is 2 Polarization (359/122)
      FOR114          Subclass FOR114 indent level is 2 Time and frequency division (359/123)
  FOR115          Subclass FOR115 indent level is 2 Wavelength division/frequency division (includes scattering, e.g., Raman, Brillouin, etc.) (359/124)
  FOR116          Subclass FOR116 indent level is 3 Subscriber system (359/125)
  FOR118          Subclass FOR118 indent level is 3 By optical coupling (359/127)
      FOR119          Subclass FOR119 indent level is 4 Switch (359/128)
      FOR120          Subclass FOR120 indent level is 4 Prism (359/129)
      FOR121          Subclass FOR121 indent level is 4 Grating (359/130)
      FOR122          Subclass FOR122 indent level is 4 Lens (359/131)
      FOR123          Subclass FOR123 indent level is 3 Single source, electrically controlled (359/132)
  FOR124          Subclass FOR124 indent level is 3 Different sources (359/133)
      FOR125          Subclass FOR125 indent level is 4 With pump (359/134)
  FOR126          Subclass FOR126 indent level is 2 Time division (359/135)
      FOR127          Subclass FOR127 indent level is 3 Multiple access (e.g., CSMA, CDMA) (359/136)
      FOR128          Subclass FOR128 indent level is 3 Subscriber system (359/137)
  FOR129          Subclass FOR129 indent level is 3 By specific optical element (359/138)
      FOR130          Subclass FOR130 indent level is 4 Optical switch (359/139)
      FOR131          Subclass FOR131 indent level is 3 With delay (359/140)
      FOR132          Subclass FOR132 indent level is 1 Underwater (359/141)
  FOR133          Subclass FOR133 indent level is 1 Remote control (359/142)
      FOR134          Subclass FOR134 indent level is 2 Bidirectional (i.e., monitoring or acknowledge) (359/143)
      FOR135          Subclass FOR135 indent level is 2 In industrial environment (e.g., robot control) (359/144)
      FOR136          Subclass FOR136 indent level is 2 With radio link (359/145)
      FOR137          Subclass FOR137 indent level is 2 With television or radio system (359/146)
      FOR138          Subclass FOR138 indent level is 2 Switching (359/147)
      FOR139          Subclass FOR139 indent level is 2 Plural functions (359/148)
  FOR140          Subclass FOR140 indent level is 1 Photophone (359/149)
  FOR141          Subclass FOR141 indent level is 2 Transducer, per se (359/150)
  FOR143          Subclass FOR143 indent level is 1 Optical transceiver (359/152)
      FOR144          Subclass FOR144 indent level is 2 Including compensation (359/153)
  FOR145          Subclass FOR145 indent level is 1 Transmitter and receiver system (359/154)
      FOR146          Subclass FOR146 indent level is 2 Presence detector (359/155)
      FOR147          Subclass FOR147 indent level is 2 With polarization (359/156)
      FOR148          Subclass FOR148 indent level is 2 One transmitter, plural receivers (359/157)
      FOR149          Subclass FOR149 indent level is 2 With synchronization (359/158)
      FOR150          Subclass FOR150 indent level is 2 With alignment between transmitter and receiver (359/159)
      FOR151          Subclass FOR151 indent level is 2 With pumping (359/160)
      FOR152          Subclass FOR152 indent level is 2 With compensation (359/161)
      FOR153          Subclass FOR153 indent level is 2 With electrical oscillator (359/162)
      FOR154          Subclass FOR154 indent level is 2 With optical circuit board (359/163)
  FOR155          Subclass FOR155 indent level is 2 Plural stations (359/164)
  FOR159          Subclass FOR159 indent level is 2 Passive system (359/168)
      FOR160          Subclass FOR160 indent level is 3 Retroreflection (359/169)
      FOR161          Subclass FOR161 indent level is 2 Retroreflection (359/170)
      FOR162          Subclass FOR162 indent level is 2 Received signal supplies power distribution to diverse devices (359/171)
      FOR163          Subclass FOR163 indent level is 2 Satellite communications (359/172)
      FOR164          Subclass FOR164 indent level is 2 Including optical waveguide (359/173)
  FOR165          Subclass FOR165 indent level is 1 Optical repeater system (359/174)
      FOR166          Subclass FOR166 indent level is 2 Demodulating (359/175)
  FOR167          Subclass FOR167 indent level is 2 Regenerative (359/176)
      FOR168          Subclass FOR168 indent level is 3 Monitoring (359/177)
      FOR169          Subclass FOR169 indent level is 2 Star (359/178)
      FOR170          Subclass FOR170 indent level is 2 Including optical waveguide (359/179)
  FOR171          Subclass FOR171 indent level is 1 Transmitter (359/180)
  FOR172          Subclass FOR172 indent level is 2 With particular modulation (359/181)
      FOR173          Subclass FOR173 indent level is 3 Frequency modulation (359/182)
      FOR174          Subclass FOR174 indent level is 3 Phase modulation (359/183)
  FOR175          Subclass FOR175 indent level is 3 Pulse modulation (359/184)
      FOR176          Subclass FOR176 indent level is 4 Pulse-code (359/185)
      FOR177          Subclass FOR177 indent level is 4 Pulse time (359/186)
      FOR178          Subclass FOR178 indent level is 2 With feedback (359/187)
      FOR179          Subclass FOR179 indent level is 2 Including optical waveguide (359/188)
  FOR180          Subclass FOR180 indent level is 1 Receiver (359/189)
      FOR181          Subclass FOR181 indent level is 2 Homodyne (359/190)
  FOR182          Subclass FOR182 indent level is 2 Heterodyne (359/191)
      FOR183          Subclass FOR183 indent level is 3 With polarization (359/192)
      FOR184          Subclass FOR184 indent level is 2 With optical element (e.g., lens, mirror, etc.) (359/193)
      FOR185          Subclass FOR185 indent level is 2 Automatic gain control (359/194)
      FOR186          Subclass FOR186 indent level is 2 With optical waveguide) (359/195)

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