Title :
Optical DQPSK Receiver With Enhanced Dispersion Tolerance
Author :
Lyubomirsky, Ilya ; Chien, Cheng-Chung ; Wang, Yi-Hsiang
Author_Institution :
Univ. of California, Riverside
fDate :
4/1/2008 12:00:00 AM
Abstract :
We propose and analyze a novel differential quadrature phase-shift-keying (DQPSK) receiver architecture based on optical frequency discriminator filtering and direct detection. Our simulations show that such a receiver provides significantly enhanced tolerance to chromatic dispersion compared with the conventional delay-interferometer-based receiver. Preliminary measurement results demonstrate the novel DQPSK demodulator concept at 20 Gb/s.
Keywords :
differential phase shift keying; optical fibre communication; optical filters; optical modulation; optical receivers; chromatic dispersion tolerance; demodulator; differential quadrature phase-shift-keying; direct detection; optical DQPSK receiver; optical frequency discriminator filtering; Crosstalk; Delay; Demodulation; Frequency; Optical filters; Optical interferometry; Optical noise; Optical receivers; Optical sensors; SONET; Differential quadrature phase-shift-keying (DQPSK) receiver; frequency discriminator;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.918216
