Title :
A Stable and Tunable Linear-Polarization Fiber Ring Laser With a High SMSR by Using a Compounded Fiber Filter
Author :
Hui Zou ; Shuqin Lou ; Wei Su ; Guolu Yin
Author_Institution :
Sch. of Electr. & Inf. Eng., Beijing Jiaotong Univ., Beijing, China
Abstract :
A stable and tunable linear-polarization fiber ring laser with a high side-mode-suppression ratio (SMSR) is proposed and experimentally demonstrated by using a compounded fiber filter, which is composed of a dual-pass Mach-Zehnder interferometer filter incorporating one segment of polarization-maintaining fiber and a high finesse filter. By adjusting the polarization controllers, the output laser can be tuned from 1560.37 to 1568.56 nm and an SMSR as high as 72 dB is achieved. In addition, the peak power fluctuation and wavelength shift are monitored to be less than 0.08 dB and 0.02 nm over an hour. Due to the introduction of the compounded fiber filter as a wavelength selector, the side mode of lasing output can be effectively suppressed and mode competition can be weakened. As a result, the SMSR of lasing output is increased and power stability is improved.
Keywords :
Mach-Zehnder interferometers; fibre lasers; optical fibre filters; optical fibre polarisation; ring lasers; SMSR; compounded fiber filter; dual-pass Mach-Zehnder interferometer filter; fiber ring laser; high finesse filter; polarization controllers; polarization-maintaining fiber; power fluctuation; side-mode-suppression ratio; stable linear polarization; tunable linear polarization; wavelength 1560.37 nm to 1568.56 nm; wavelength shift; Laser stability; Optical fiber communication; Optical fiber filters; Optical fiber polarization; Ring lasers; Compounded fiber filter; fiber laser; high SMSR; linear-polarization; stable tunable;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2013.2274764