| US 7,457,543 B2 | ||
| Add/drop module for single fiber wavelength division multiplexing systems | ||
| James Finn Aldridge, Palo Alto, Calif. (US); Frank Levinson, Palo Alto, Calif. (US); Johnny Zhong, Hayward, Calif. (US); and Steve Wang, San Jose, Calif. (US) | ||
| Assigned to Finisar Corporation, Sunnyvale, Calif. (US) | ||
| Filed on Aug. 02, 2004, as Appl. No. 10/910,184. | ||
| Claims priority of provisional application 60/498949, filed on Aug. 29, 2003. | ||
| Claims priority of provisional application 60/492181, filed on Aug. 01, 2003. | ||
| Prior Publication US 2005/0025489 A1, Feb. 03, 2005 | ||
| Int. Cl. H04J 14/02 (2006.01); H04B 10/00 (2006.01) | ||
| U.S. Cl. 398—83 [398/5] | 12 Claims |
| 1. A single-fiber optical add/drop multiplexer for accessing and transmitting optical signals on a single optical fiber in
a wavelength division multiplexing architecture, comprising:
a first port configured to relay and receive optical signals to and from a first portion of the single optical fiber;
a second port configured to relay and receive optical signals to and from a second portion of the single optical fiber;
a third port in communication with each of the first port, the second port, and a first optical transceiver; and
a fourth port in communication with each of the first port, the second port, and a second optical transceiver, wherein the
first port is configured to communicate substantially simultaneously with the third and fourth ports, and the second port
is configured to communicate substantially simultaneously with the third and fourth ports
wherein the first optical transceiver transmits and receives optical signals over a first wavelength channel and the second
optical transceiver transmits and receives optical signals over a second wavelength channel that is different from the first
wavelength channel.
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