The characteristics of coherent coupling in Mach-Zehnder erbium-doped fiber laser cavity are experimentally studied. By virtue of a seemly controlling of length difference between two interferometric arms, the obtained comb-like spectrum of interferometer resonator with a period of 0.06 nm commendably agrees with the theory of self-organization coherence. The coherent output exits from the output mirror of a fiber Bragg grating with 4.5% reflectivity. A high coherent combining efficiency of 94% is obtained. Investigation on characteristics of the leak power opens out self-organization mechanism in Mach-Zehnder composite cavity.
© 2008 Chinese Optics Letters
(030.1640) Coherence and statistical optics : Coherence
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3290) Lasers and laser optics : Laser arrays
(140.3410) Lasers and laser optics : Laser resonators
Fengnian Liu, Bo Liu, Bangcai Huang, Guiyun Kai, Shuzhong Yuan, and Xiaoyi Dong, "Investigation on characteristics of self-organization in Mach-Zehnder erbium-doped fiber laser cavity," Chin. Opt. Lett. 6, 186-188 (2008)