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An Erbium-doped Fiber Amplifier Optical Circuit with Adjustable Gain Range

An erbium-doped fiber and amplifier technology, applied in the field of optical signal amplification, can solve the problems of increasing the type of system modules and maintenance costs, and achieve the effect of reducing noise index and pump power

Active Publication Date: 2020-08-07
AOC TECH (WUHAN) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This increases the number of modules and maintenance costs of the system

Method used

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  • An Erbium-doped Fiber Amplifier Optical Circuit with Adjustable Gain Range
  • An Erbium-doped Fiber Amplifier Optical Circuit with Adjustable Gain Range
  • An Erbium-doped Fiber Amplifier Optical Circuit with Adjustable Gain Range

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present 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.

[0030] Such as figure 1 , the embodiment of the present invention provides an erbium-doped fiber amplifier optical circuit with adjustable gain range (hereinafter referred to as the erbium-doped optical fiber amplifier optical circuit or the optical circuit), which includes two gain switch units A, and the gain switch unit A includes two optical switches , an erbium-doped optical fiber unit A3 and a controller A4, the two optical switches are respectively a fi...

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Abstract

The invention relates to the technical field of optical signal amplification, and provides an erbium-doped optical fiber amplifier light path with an adjustable gain range. The erbium-doped optical fiber amplifier light path comprises a gain switch unit, wherein the gain switch unit comprises two optical switches, an erbium-doped optical fiber unit and a controller, wherein the two optical switches include a first optical switch and a second optical switch; one end of the first optical switch is connected with one end of the second optical switch, and the other end of the first optical switchand the other end of the second optical switch are connected with the erbium-doped optical fiber unit separately; and the two optical switches are connected with the controller. The erbium-doped optical fiber amplifier optical path provided by the invention can provide a relatively wide gain range and ensure relatively high optical characteristics.

Description

technical field [0001] The invention relates to the technical field of optical signal amplification, in particular to an erbium-doped fiber amplifier optical circuit with adjustable gain range. Background technique [0002] Erbium-doped fiber amplifier (EDFA) is an indispensable unit in the DWDM all-optical network. It can directly amplify multiple optical signals online at the same time, and is used to compensate for the attenuation of optical power caused by factors such as line transmission and node loss. In the network configuration, the EDFA output single-wave power of each node is generally kept constant. Different span losses make the incident light of the module change accordingly, such as by adjusting the gain configuration of the module to achieve a fixed single-wavelength power output. Ordinary EDFA cannot cover too wide a range of span loss. When the attenuation value of the gain flattening filter in the optical path is large, the noise at the low gain point wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/067H01S3/10
CPCH01S3/06754H01S3/10023
Inventor 彭霁宇高飞
Owner AOC TECH (WUHAN) CO LTD
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