Brillouin fiber laser pumped by a DFB laser diode

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In this paper, we present a novel Brillouin fiber-ring laser utilizing an unbalanced Mach-Zehnder interferometer (UMZI) as coupling device. The laser is pumped by a distributed-feedback laser diode and shows continuous-wave and single-frequency operation. Frequency-dependent transmission characteristics of the UMZI make it possible for the pump wave to Pass through the laser-ring cavity with no resonance effect for stable pump operation, while the Brillouin laser signal still resonates in a high-finesse cavity. Single and multiple longitudinal mode operations are observed according to the relative location between longitudinal modes and Brillouin gain-curve center. A stable single-frequency operation is achieved using a simple stabilizing feedback loop based on dithering and autotracking techniques. Using this simple stabilizing feedback loop, the laser-intensity fluctuation is highly suppressed and remains below 4%. The Brillouin output converted from the pump power of 26.4 mW is about 3.18 mW, and the linewidth is measured to be below 1 kHz.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2003-02
Language
English
Article Type
Article
Keywords

RING LASER; SCATTERING; GENERATION; LINEWIDTH; RESONATOR; GAIN; WAVE

Citation

JOURNAL OF LIGHTWAVE TECHNOLOGY, v.21, no.2, pp.546 - 554

ISSN
0733-8724
URI
http://hdl.handle.net/10203/20844
Appears in Collection
PH-Journal Papers(저널논문)
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