Open AccessCompact MEMS external cavity tunable laser with ultra-narrow linewidth for coherent detection
Author(s) -
Di Zhang,
Jianyi Zhao,
Qi Yang,
Li Wen,
Fu Yanfeng,
Chao Li,
Ming Luo,
Shenglei Hu,
Qianggao Hu,
Lei Wang
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.019670
Subject(s) - laser linewidth , optics , materials science , laser , tunable laser , multiplexing , optoelectronics , physics , computer science , telecommunications
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.