Zhang Di, Zhao Jianyi, Yang Qi, Liu Wen, Fu Yanfeng, Li Chao, Luo Ming, Hu Shenglei, Hu Qianggao, Wang Lei
Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, College of Optoelectronics Science and Engineering, Wuhan, 430074, China.
Opt Express. 2012 Aug 27;20(18):19670-82. doi: 10.1364/OE.20.019670.
A compact and ultra-narrow linewidth tunable laser with an external cavity based on a simple single-axis-MEMS mirror is presented in this paper. We discuss the simulation of this tunable laser using a two-step hybrid analysis method to obtain an optimal design of the device. A wide wavelength tuning range about 40 nm in C-band with a narrow linewidth of less than 50 kHz and wavelength accuracy of ± 1 GHz over the entire tuning range can be achieved experimentally. We also conduct several experiments under different conditions to test the tunable laser. This device shows an excellent performance in both single-carrier polarization-multiplexed quadrature phase-shift keying (PM-QPSK) and multi-carrier orthogonal frequency division multiplexing (OFDM) coherent systems.
本文介绍了一种基于简单单轴微机电系统（MEMS）镜的外腔紧凑型超窄线宽可调谐激光器。我们讨论了使用两步混合分析方法对该可调谐激光器进行仿真，以获得器件的优化设计。通过实验可实现C波段约40 nm的宽波长调谐范围，窄线宽小于50 kHz，且在整个调谐范围内波长精度为±1 GHz。我们还在不同条件下进行了多项实验来测试该可调谐激光器。该器件在单载波偏振复用正交相移键控（PM-QPSK）和多载波正交频分复用（OFDM）相干系统中均表现出优异性能。
