Title :
Polarization insensitive MZI-based DQPSK demodulator with asymmetric half-wave plate configuration
Author :
Nasu, Y. ; Oguma, Manabu ; Takahashi, Hiroki ; Inoue, Yasuyuki ; Kawakami, H. ; Yoshida, Erika
Author_Institution :
NTT Photonics Labs., NTT Corp., Atsugi, Japan
Abstract :
We present an DQPSK demodulator with a silica-based PLC type MZI, where a half-wave plate is asymmetrically allocated to reduce polarization dependent frequency shifts, and demonstrate an error-free 43-Gbit/s demodulation for any incident SOP.
Keywords :
Mach-Zehnder interferometers; demodulators; differential phase shift keying; electro-optical modulation; integrated optoelectronics; optical communication equipment; optical fibre communication; optical fibre polarisation; optical retarders; quadrature phase shift keying; silicon compounds; SiO2; asymmetric half-wave plate configuration; bit rate 43 Gbit/s; error-free demodulation; planar lightwave circuits; polarization dependent frequency shift reduction; polarization insensitive MZI-based DQPSK demodulator; silica-based PLC type MZI; Couplers; Degradation; Demodulation; Optical coupling; Optical interferometry; Optical polarization; Optical receivers; Optical retarders; Optical waveguides; Tellurium;
Conference_Titel :
Optical Fiber communication/National Fiber Optic Engineers Conference, 2008. OFC/NFOEC 2008. Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-55752-856-8
DOI :
10.1109/OFC.2008.4528452
