Title :
Monolithic DQPSK Receiver in InP With Low Polarization Sensitivity
Author :
Doerr, C.R. ; Zhang, L. ; Chandrasekhar, S. ; Buhl, L.L.
Author_Institution :
Alcatel-Lucent, Holmdel
Abstract :
We present a monolithic differential quadrature phase-shift-keying (DQPSK) receiver in InP consisting of a 1times2 coupler, two different-length waveguides, a 2times4 coupler, and four photodetectors. We demonstrate a method to reduce the interferometer polarization sensitivity and show preliminary results of 43-Gb/s DQPSK reception.
Keywords :
III-V semiconductors; demodulators; indium compounds; integrated optics; light interferometers; light polarisation; optical couplers; optical receivers; optical waveguides; photodetectors; quadrature phase shift keying; InP - Interface; bit rate 43 Gbit/s; coupler; interferometer polarization sensitivity; low polarization sensitivity; monolithic DQPSK receiver; monolithic differential quadrature phase-shift-keying receiver; photodetectors; waveguides; Indium phosphide; Optical fiber polarization; Optical fiber testing; Optical interferometry; Optical receivers; Optical waveguides; Phase shift keying; Phase shifters; Photodetectors; Propagation delay; Differential phase-shift keying; integrated optics; optical polarization; photodetectors (PDs);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.905658
