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Fiber Brillouin Amplifier Based on Orthogonal Dual Pumps

A technology for pumping lasers and amplifiers, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems of fiber Brillouin amplifier gain reduction and achieve high gain effects

Active Publication Date: 2022-04-12
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] The present invention proposes an optical fiber Brillouin amplifier based on orthogonal dual pumps, the purpose of which is to solve the problem of gain reduction and jitter of the optical fiber Brillouin amplifier caused by the random birefringence effect of the gain fiber, and also solves the problem of weak signals of different polarization states. When amplifying, it is necessary to adjust the relative polarization state of the pump light and the weak signal light

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  • Fiber Brillouin Amplifier Based on Orthogonal Dual Pumps

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Embodiment Construction

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are Some, but not all, embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail:

[0021] Such as figure 1 As shown, the fiber Brillouin amplifier of the present embodiment includes: a pump laser (1) as a pump, an orthogonal double pump generating unit (12) capable of generating an orthogonal double pump, an optical fi...

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Abstract

The first object of the present invention is to solve the problem of gain reduction and gain jitter of the fiber Brillouin amplifier caused by the random birefringence effect of the gain fiber, and at the same time omit the need to adjust the relative polarization of the signal light and the pump light in the traditional single-pump fiber Brillouin amplifier State steps, so that the signal light of any input polarization state can obtain stable high gain; the second purpose is to distinguish the real amplified signal from the amplified spontaneous Brillouin flash noise. For this reason, a 50:50 fiber splitter, a first erbium-doped fiber amplifier, a first polarization controller, a second erbium-doped fiber amplifier, a second polarization controller, and a 50:50 fiber combiner are added behind the pump laser. Orthogonal double-pump generation unit composed of a circulator; an amplified signal screening unit composed of a third polarization controller and a polarization beam splitter is added at the output end of the optical fiber circulator.

Description

technical field [0001] The invention relates to an optical fiber Brillouin amplifier based on orthogonal double pumps, in particular to an optical fiber Brillouin amplifier capable of overcoming random birefringence effects of optical fibers and improving gain and stability, and belongs to the field of laser technology. Background technique [0002] Fiber Brillouin amplifiers have higher gain than conventional Erbium-doped fiber amplifiers. Optical fiber Brillouin amplifier is to use the stimulated Brillouin scattering effect of optical fiber to amplify signal light. Stimulated Brillouin scattering is one of the most important nonlinear effects in single-mode optical fiber. It is used in slow light, optical fiber Lasers, fiber optic sensors and other fields have important applications. In the traditional fiber Brillouin amplifier, the weak signal light and the pump light to be amplified are respectively input from opposite ends of the gain fiber, and the frequency of the pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/30H01S3/094H01S3/10
CPCH01S3/302H01S3/094042H01S3/10061
Inventor 商建明穆宽林乔耀军喻松王正康唐丽华
Owner BEIJING UNIV OF POSTS & TELECOMM
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