| US 7,477,852 B2 | ||
| Optical receiver apparatus and method | ||
| Anjali Agarwal, Matawan, N.J. (US); Andreas Benz, Erlangen (Germany); Sethumadhavan Chandrasekhar, Matawan, N.J. (US); and Peter J. Winzer, Aberdeen, N.J. (US) | ||
| Assigned to Alcatel-Lucent USA Inc., Murray Hill, N.J. (US) | ||
| Filed on Jan. 31, 2005, as Appl. No. 11/47,011. | ||
| Prior Publication US 2006/0171720 A1, Aug. 03, 2006 | ||
| Int. Cl. H04B 10/00 (2006.01) | ||
| U.S. Cl. 398—210 [398/208; 398/202; 398/203; 398/204] | 8 Claims |
| 1. A method for receiving at a receiver, a narrowband filtered optical phase shift keyed (PSK) signal, the method comprising
the steps of:
converting the PSK signal into first and second intensity-modulated signals; and
mitigating performance degradation due to narrowband filtering, exhibited in an output signal representing the PSK signal,
wherein said mitigating includes the steps of;
introducing a desired amplitude imbalance between the first second intensity modulated signals;
detecting the amplitude imbalanced first and second intensity modulated signals; and
combining the detected amplitude imbalanced first and second intensity modulated signals into the output signal.
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