Chinese Optics Letters, Vol. 3, Issue 1, 0118 (2005)
Optical bistability in tunable fiber laser using fiber Mach-Zehnder interferometer
Guohui Lv1,2,*, Hongan Ye2, Junqing Li1, Xiudong Sun1, Xinming Zhang2, and Cheng Li1,2
- 1Department of Physics, Harbin Institute of Technology, Harbin 150001
- 2School of Electronic Engineering, Heilongjiang University, Harbin 150080
In this letter, a novel mechanism of hybrid optical bistability is proposed by using nonlinear mechanism in the frequency domain. This device is based on electro-optical feedback through the fiber Bragg grating on piezoelectric transducer (PZT) to tune continuous wave (CW) fiber laser. The optical bistable characteristics for two manners of separately alternating input power and bias voltage are discussed. The smallest wavelength shift of the order of 0.001 nm needed to realize a switching process in this optical bistability device is estimated. The potential applications of this device in the optical fiber sensor technique are also discussed.
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