Abstract

We have theoretically analyzed and experimentally observed the effects of wavelength dependent birefringence inside a laser cavity on the output characteristics of fiber lasers with a figure eight geometry. The spectral and polarization characteristics of fiber lasers are found to be very susceptible to the resultant birefringence composed of the intrinsically existing wavelength dependent birefringence and the externally induced birefringences inside the fiber. For the variation of twist-induced birefringence inside the nonlinear amplifying loop mirror, the laser output power and center wave-length of continuous wave lasers change periodically, but the polarization characteristics remains nearly unchanged. The changes of the birefringence inside the linear loop has little effect on the spectral characteristics but changes the polarization properties such as the polarization direction.

© 1998 Optical Society of Korea

Tunable multi-wavelength SOA based linear cavity dual-output port fiber laser using Lyot-Sagnac loop mirror

M. A. Ummy, N. Madamopoulos, A. Joyo, M. Kouar, and R. Dorsinville
Opt. Express 19(4) 3202-3211 (2011)

Theory of nonlinear loop mirrors with twisted low-birefringence fiber

Eugene A. Kuzin, Nikolai Korneev, Joseph W. Haus, and Baldemar Ibarra-Escamilla
J. Opt. Soc. Am. B 18(7) 919-925 (2001)

Experimental investigation of the nonlinear optical loop mirror with twisted fiber and birefringence bias

B. Ibarra-Escamilla, E. A. Kuzin, P. Zaca-Morán, R. Grajales-Coutiño, F. Mendez-Martinez, O. Pottiez, R. Rojas-Laguna, and J. W. Haus
Opt. Express 13(26) 10760-10767 (2005)

Polarization properties of fiber lasers with twist-induced circular birefringence

Ho Young Kim, El Hang Lee, and Byoung Yoon Kim
Appl. Opt. 36(27) 6764-6769 (1997)

Switchable and spacing-tunable dual-wavelength thulium-doped silica fiber laser based on a nonlinear amplifier loop mirror

Shuo Liu, Fengping Yan, Ting Feng, Beilei Wu, Ze Dong, and Gee-Kung Chang
Appl. Opt. 53(24) 5522-5526 (2014)