BACKGROUND With the popularization of the Internet, the capacity of optical
communication systems has been increasingly grow ing. By way of example, for a trunk line …

A signal processing circuit includes: a first compensator configured to compensate for
waveform distortion corresponding to chromatic dispersion of a received optical signal by …

BACKGROUND Conventionally, optical communication systems operate in the 1 gigabit per
second (Gbps) to 10 Gbps range. With the increase in the amount of data that needs to be …

A method of data symbol recovery in a coherent receiver of an optical communications
system. Two or more SYNC bursts, having a known symbol sequence and periodicity, are …

BACKGROUND In modern communication systems, timing recovery at a receiver is an
essential issue for Successful communication. Usually, at a transmitter, digital values …

Methods and techniques are disclosed for correcting the effect of cycle slips in a coherent
communications system. A signal comprising SYNC bursts having a predetermined …

5,705.949 A* 1/1998 Alelyunas et al............ 329/304 5,977.820 A* 1 1/1999 Sogabe et
al................ 329,306 5,995,512 A 1 1/1999 Pogue et al. 6,252,692 B1* 6/2001 …

N. Kikuchi, et al.,“First experimental demonstration of single-po larization 50-Gbit/s 32-level
(QASK and 8-DPSK) incoherent optical multilevel transmission”. Proc. Optical Fiber …

(57) ABSTRACT A detection system and method may be used to detect data transmitted in a
signal With data pattern dependent signal distortion. In general, a detection system and …

Optional Exteria Feedback Channe to-end bit error rate and to alter its power dissipation to
that sufficient to meet said end-to-end bit error rate. In one embodiment the optical …