Multiwavelength fiber lasers based on multimode fiber Bragg gratings using offset launch technique
نویسندگان
چکیده
The reflective characteristics of a multimode fiber Bragg grating (MM-FBG) and the changes of reflective spectra with mode excitation conditions in the multi-mode fiber were investigated. Two multiwavelength fiber laser configurations using offset launch technique to MM-FBG with hybrid gain mediums are proposed and demonstrated. Different multiwavelength outputs were obtained by variation of the spatial launching position of the single-mode fiber against the MM-FBG to achieve different mode group excitation. The first laser employs one MM-FBG in the ring cavity, achieving seven output wavelengths with a wavelength spacing of 0.76 nm. The second laser comprises two MM-FBGs connected in parallel, yielded 10 output wavelengths. 2006 Elsevier B.V. All rights reserved.
منابع مشابه
Multiwavelength fiber laser based on multimode fiber Bragg gratings using offset launch technique
A multiwavelength fiber laser based on multimode fiber Bragg gratings (MM-FBGs) is proposed and demonstrated. The laser, which is comprised of two MM-FBGs connected in a parallel configuration, can yield 10 stable output wavelengths using the offset launch technique.
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