A fibre grating DFB laser for generation of optical microwave signal |
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| Authors: | W Zhang Y C Lai J A R Williams C Lu L Zhang I Bennion |
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| Institution: | a Photonics Research Group, Department of Electronic Engineering and Applied Physics, Aston University, Birmingham B4 7ET, UK;b Department of Electrical and Electronic Engineering, Nanyang Technological University, Singapore |
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| Abstract: | A distributed feedback fibre laser is realised with a phase-shifted fibre Bragg grating. Dual-mode operation is obtained by means of linear birefringence for heterodyne generation of optical microwave signal. The two modes, operating in the same cavity produce a beat signal with exceptionally low-phase noise. The linewidth of the resulting microwave signal obtained is less than 1 kHz. |
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| Keywords: | Heterodyne Optical phase locked loop Phase-shifted grating |
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