Er-Yb codoped phosphate glass optical waveguide amplifier with round-trip path

Abstract

The invention relates to a back-off channel yttrium codoping phosphate glass optical waveguide amplifier in the field of optical electronic technology. It comprises: a fiber optical circulator, a first 980nm pump laser, a first 980 / 1550 wavelength-division multiplex device, a yttriumm codoping phosphate glass optical waveguide, a fiber optical reflector, a polarizer controller, a second 980nm pump laser and a second 980 / 1550 wavelength-division multiplex device, wherein the fiber optical circulator is connected with the end port of the first 980 / 1550 wavelength-division multiplex device; the first 980nm pump laser is connected with the 980 end port of the first 980 / 1550 wavelength-division multiplex device; the wave-compound end of the first 980 / 1550 wavelength-division multiplex device is connected with one end of the yttriumm codoping phosphate glass optical waveguide; the other end of the yttriumm codoping phosphate glass optical waveguide is connected with the wave-compound end of the second 980 / 1550 wavelength-division multiplex device.

Description

technical field [0001] The invention relates to a device in the technical field of optoelectronics, in particular to a reciprocating channel erbium-ytterbium co-doped phosphate glass optical waveguide amplifier. Background technique [0002] At present, the usual Erbium-doped waveguide amplifier consists of an input coupling part, an Erbium-doped optical waveguide, an output coupling part, and a pumping optical component connected by optical fibers. The waveguide is made based on silicon-silica doped waveguide technology. Erbium-doped waveguide amplifiers play an important role in the miniaturization and low-cost transition of optical communication and optical information processing systems. Erbium-doped waveguide amplifiers can be widely used as preamplifiers, power amplifiers, and relay amplifiers in optical communication networks. They can also be integrated with a variety of optoelectronic devices and used in optical information processing, optical sensing, and other fie...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a round-trip channel erbium-ytterbium co-doped phosphate glass optical waveguide amplifier, which uses a special round-trip channel structure to improve the gain characteristics and noise characteristics of the erbium-doped waveguide amplifier , overcome the shortcomings of low gain and high noise figure in the current technology of erbium-doped waveguide amplifiers, and realize the technical requirements of high gain and low noise of waveguide amplifiers

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