External-cavity semiconductor laser with Bragg grating in multimode fiber

An external-cavity semiconductor laser with a 50-dB sidemode suppression ratio and a 0.05-nm spectral bandwidth is realized by using a Bragg grating in a multimode fiber (MMF). With the MMF, a coupling efficiency of 90% and a slope efficiency of 0.12 mW/mA are obtained, compared to a coupling effici...

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Bibliographic Details
Published in:IEEE photonics technology letters 2004-10, Vol.16 (10), p.2341-2343
Main Authors: Hong-Gang Yu, Chang-Qing Xu, Yong Wang, Wojcik, J., Zhi-Lin Peng, Mascher, P.
Format: Article
Language:English
Subjects:
Bandwidth
Bragg gratings
Distributed feedback devices
Fiber gratings
Fiber lasers
Fibers
Injection current
Joining
Lasing
Optical fibers
Power generation
Semiconductor lasers
Spectra
Surface emitting lasers
Vertical cavity surface emitting lasers
Wavelengths
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Summary:An external-cavity semiconductor laser with a 50-dB sidemode suppression ratio and a 0.05-nm spectral bandwidth is realized by using a Bragg grating in a multimode fiber (MMF). With the MMF, a coupling efficiency of 90% and a slope efficiency of 0.12 mW/mA are obtained, compared to a coupling efficiency of 50% and a slope efficiency of 0.05 mW/mA with a standard single-mode (SM) fiber. The alignment tolerance for the MMF is also improved in contrast to the SM fiber. The lasing wavelength can be stably locked at one of the Bragg wavelengths of the fiber grating in large ranges of injection current and temperature under the static and dynamic states.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2004.834543