Title :
Simple and flexible optical NRZ-DQPSK demodulation and detection scheme
Author :
Yu, Yu ; Zhang, Xinliang ; Wang, Fei ; Huang, Dexiu
Author_Institution :
Wuhan National Laboratory for Optoelectronics & School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, 430074, China
Abstract :
We propose and demonstrate a simple and flexible all-optical NRZ-DQPSK receiver based on optical detuned filtering. The proposed demodulator is quite flexible to input bit rates, which means it can be used for different bit rates without any change. With two given optical band-pass filters, simulation and comparison show that NRZ-DQPSK signals at 20, 40 and 80Gb/s (10, 20 and 40G symbol rate) can be demodulated to in-phase and quadrature data successfully by adjusting the detuning of two given filters.
Keywords :
Band pass filters; Bandwidth; Bit rate; Demodulation; Filtering; Frequency; Optical filters; Optical interferometry; Optical receivers; Optical sensors; Demodulation; different bit-rates; non-return-to-zero differential quadrature phase shift keying (NRZ-DQPSK);
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
