Analysis of format conversion from optical 16QAM to QPSK based on cascaded four-wave mixing in semiconductor optical amplifier |
| |
Authors: | Yueying Zhan Min ZhangMingtao Liu Lei LiuZhuo Liu Xue Chen |
| |
Institution: | State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, 10 Xi Tu Cheng Road, Beijing 100876, China |
| |
Abstract: | A scheme of format conversion from optical 16-ary quadrature amplitude modulation (16QAM) to quadrature phase shift keying (QPSK) signal based on cascaded four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs) is proposed. Theoretical analysis and simulations of the format conversion scheme are conducted to validate the feasibility of the proposal. In this proposal, the phase conjugated of 16QAM signal is generated after the first FWM process in an SOA, and then the QPSK signal is converted due to the second non-degenerate FWM (ND-FWM) process in another SOA. The performance and the optimal design of the 10 Gbit/s format conversion system under various key parameters of SOAs are evaluated and discussed. Simulation results present useful to enable interconnection between backbone network and access network. |
| |
Keywords: | Four-wave mixing (FWM) Semiconductor optical amplifier (SOA) Format conversion Quadrature phase shift keying (QPSK) 16-Ary quadrature amplitude modulation (16QAM) |
本文献已被 ScienceDirect 等数据库收录! |