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Optical communication signal amplifier

A kind of signal amplifier, fiber amplifier technology

Inactive Publication Date: 2017-06-13
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Optical amplifiers, such as EDFA (erbium-doped fiber amplifier) ​​and SOA (semiconductor optical amplifier) ​​can effectively solve the problem of insufficient optical power budget. The disadvantage is that the application of optical fiber amplifiers to amplify signal light will introduce additional ASE (amplified spontaneous emission) noise. power, causing problems such as OSNR degradation, increased bit error rate, and reduced amplifier pump conversion efficiency

Method used

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  • Optical communication signal amplifier

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Embodiment Construction

[0011] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0012] Such as figure 1 The shown optical communication signal amplifier includes an optical fiber amplifier 21 and an optical filter 22. The optical filter 22 is a tunable optical filter with adjustable filtering frequency, and its filtering passband is consistent with the optical signal channel to be amplified. Described tunable optical filter 22 is one, is located at the input stage, intermediate stage or output stage of optical fiber amplifier 21, and described tunable optical filter 21 is a plurality of, is respectively arranged at the input stage, intermediate stage and output stage of optica...

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Abstract

The invention discloses an optical communication signal amplifier, which includes an optical fiber amplifier and an optical filter. The optical filter is an adjustable optical filter with adjustable filtering frequency, and its filtering passband is consistent with the optical signal channel to be amplified. The device is located at the input end of the optical amplifier; the input optical signal passes through the optical splitter, a part of which is incident to the optical fiber amplifier as signal light, and a part is incident to the optical channel monitoring module as detection light. Add a tunable optical filter (TOF) with tunable wavelength and bandwidth to obtain a low-noise optical amplifier, which can effectively filter out ASE noise while amplifying the signal optical power, and improve the system optical signal-to-noise ratio and amplifier pump conversion efficiency , which is conducive to the amplification and transmission of small signals and improves the detection sensitivity.

Description

technical field [0001] The invention relates to the technical field of communication electronics, in particular to an optical communication signal amplifier. Background technique [0002] Single-channel 100GBit / s capacity optical fiber communication systems are being deployed and applied in large quantities, and will develop towards 400Gbit / s or even 1Tbit / s in the future. With the increase of transmission rate, the requirements for signal optical power and OSNR (optical signal-to-noise ratio) are raised Special request. Optical amplifiers, such as EDFA (erbium-doped fiber amplifier) ​​and SOA (semiconductor optical amplifier), can effectively solve the problem of insufficient optical power budget. The disadvantage is that the application of optical fiber amplifiers to amplify signal light will introduce additional ASE (amplified spontaneous emission) noise. Power, which causes problems such as OSNR degradation, increased bit error rate, and reduced amplifier pump conversio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/291H03F3/08H03F1/26
CPCH04B10/2912H03F1/26H03F3/08
Inventor 徐易朗吴言
Owner CHONGQING UNIV
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