Tunable single-polarization Brillouin erbium-doped optical fiber laser with super narrow linewidth
An erbium-doped fiber and laser technology, used in lasers, laser parts, phonon exciters, etc., can solve the problems of increasing cavity loss, constant adjustment and control, complex laser structure, etc., and achieves stable single polarization state laser. Effect
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[0023] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0024] The present invention proposes a tunable single-polarization ultra-narrow linewidth Brillouin erbium-doped fiber laser, which consists of a narrow linewidth pump laser 1, a three-port circulator 2, a wavelength division multiplexer 3, and an erbium-doped fiber pump source 4. Composed of erbium-doped optical fiber 5, piezoelectric ceramic ring 6, narrow-band optical filter 7 and optical fiber coupler 8 with a coupling mode of 2×2 (or 1×2). The circulator 2 is a three-port circulator provided with a first port 21, a second port 22 and a third port 23, and the narrow linewidth pump laser 1 is connected to the first port 21 of the circulator 2 through an optical fiber , the second port 22 of the circulator 2 is connected to the reflection port 31 of the wavelength division multiplexer 3 through an optical fiber, an...
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