Title :
Degradations in balanced DPSK receivers
Author :
Winzer, Peter J. ; Kim, Hoon
Author_Institution :
Bell Labs., Holmdel, NJ, USA
Abstract :
We discuss, both by simulation and experiment, the design of balanced differential phase-shift keying receivers. We study detector amplitude imbalance and phase imbalance, interferometer delay mismatch, interferometer extinction, and laser frequency offset. The most critical impairment in a practical receiver is found to be a mismatch between laser frequency and interferometer phase, which directly impacts the interference quality.
Keywords :
differential phase shift keying; light interference; light interferometers; optical modulation; optical receivers; balanced DPSK receiver degradation; balanced differential phase-shift keying receivers; detector amplitude imbalance; interference quality; interferometer delay mismatch; interferometer extinction; interferometer phase; laser frequency; laser frequency offset; phase imbalance; practical receiver; Degradation; Delay; Differential quadrature phase shift keying; Optical interferometry; Optical noise; Optical receivers; Optical transmitters; Phase modulation; Phase shifting interferometry; Signal to noise ratio;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.816112
