Double-ring cavity configuration of actively mode-locked multi-wavelength fiber laser with equally tunable wavelength spacing |
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Authors: | J L Yang S C Tjin N Q Ngo R T Zheng |
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Institution: | (1) SIF Universal Pte Ltd., 41 Science Park Road, #01–16 The Gemini, Singapore, 117610, Singapore;(2) Xiangtan University, Hunan, 41110, P.R. China;(3) School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore |
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Abstract: | A novel actively mode-locked multi-wavelength tunable fiber laser with equally increased or decreased wavelength spacing is presented. It is constructed using a double-ring cavity combined with an amplitude modulator and cascaded fiber Bragg gratings (FBGs). The cavity lengths for all FBGs are intrinsically identical due to the double-ring configuration, and simultaneous mode locking of multiple wavelengths is therefore achieved by applying only one mode-locking signal to the modulator. The FBGs are mounted on a organic plate with angles between adjacent gratings such that the forces applied to the FBGs have an equal force increment; thus, stretching or compressing the cascaded FBGs can achieve a wavelength tuning with equally increased or decreased wavelength spacing.This revised version was published online in March 2005. In the previous version, the published online date was missing |
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Keywords: | 42 55 Wd 42 60 Fc 42 81 Wg |
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