Distributed Raman amplifier

A Raman amplifier, distributed technology, applied in instruments, optics, electrical components, etc., can solve problems such as complex implementation means

Inactive Publication Date: 2005-11-23
易信创科智能科技(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its various performance defects and complex implementation methods, this depolarizer has not been widely used in Raman amplifiers.

Method used

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Embodiment Construction

[0026] Such as image 3 As shown, the present invention includes a pump light laser 8 , a signal light laser 1 , a transmission fiber 4 , a multiplexer 5 and a demultiplexer 3 . Both ends of the signal fiber 4 are respectively connected with a multiplexer 5 and a multiplexer 3 , and the signal light emitted by the signal light laser 1 is output to the receiver 6 through the signal fiber 4 . The pump laser 8 is connected to the multiplexer 5 through 2×2 directional couplers D1, Dm, etc. The coupler is also provided with a loop fiber, that is, connecting one output end of the directional coupler with an input end with an optical fiber to form a fiber delay loop, that is, D in the figure 1 、D m and other structures. Due to the effect of the delay ring, the pump light output from the pump light laser 8 to the multiplexer 5 will become a superposition of a series of mutually uncorrelated lights, thereby achieving the purpose of eliminating polarization. The pumping light enters...

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Abstract

The invention discloses a distributed Laman magnifier which comprises pumping optical laser used to produce pumping optical, signal optical laser used to produce signal optical, signal optical fiber, wave-divider and wave-bonder, wherein the entrance of signal optical fiber is connected with wave-bonder, while the exit with wave-divider; the signal which is emit from signal optical laser and pumping optical laser entrances into signal optical by wave-bonder and divides at wave-divider; the optical road between pumping optical laser and wave-bonder has coupler which has circle optical fiber.

Description

Technical field: [0001] The invention relates to a distributed Raman amplifier. Background technique: [0002] The signal light will cause energy attenuation due to fiber transmission loss in the optical transmission line, so that the optical receiving end cannot receive the signal correctly. Optical fiber amplifier is a device for optical amplification to compensate signal light energy. Commonly used optical amplifiers include semiconductor optical amplifiers, erbium-doped fiber amplifiers and Raman fiber amplifiers. In recent years, Raman amplifiers have gradually been widely used. [0003] The Raman amplifier is amplified by using the fiber Raman scattering effect. When an optical signal passes through a medium, some energy will deviate from the predetermined direction and diffuse to other directions in space, which is called light scattering. In an optical fiber, when a light wave propagates in an optical fiber, photons interact with the vibrational modes of silica m...

Claims

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Application Information

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IPC IPC(8): G02F1/39H04B10/291
Inventor 李巨浩朱晓宇郑磊朱立新陈章渊
Owner 易信创科智能科技(深圳)有限公司
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