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Switchable multi-wavelength erbium-doped fiber lasers by using cascaded fiber Bragg gratings written in high birefringence fiber |
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| Authors: | Zhao Chun-Liu Yang Xiufeng Lu Chao Ng Jun Hong Guo Xin Partha Roy Chaudhuri Dong Xinyong |
| Affiliation: | a Lightwave Department, Institute for Infocomm Research, Unit 230, Block 2, Innovation Center, 18 Nanyang Drive, Singapore 637723, Singapore b Network Technological Research Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore |
| Abstract: | A novel and simple Erbium-doped fiber laser by using cascaded fiber Bragg gratings (FBGs) written in high-birefringence fibers for switchable multi-wavelength operation is proposed. Due to two-peak reflection with orthogonal polarizations of the FBG, the polarization hole-burning effect in the cavity is greatly enhanced. Experimental results show that the stable dual- and three-wavelength lasing operation with very narrow wavelength separation (0.39 nm) can be generated at room temperature. The configuration is simple and flexible. Only by adjusting polarization controllers (PCs), the laser can be switched among the stable single-, dual- and three-wavelength lasing operations. |
| Keywords: | Multi-wavelength Erbium-doped fiber laser Wavelength switching High-birefringence fiber Polarization hole burning Fiber Bragg grating |
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