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Er-Tm-Nd co-doped fiber ultra wideband light source

An ultra-broadband and optical fiber technology, applied in the field of optical transmission, can solve the problem that the broadband light source cannot meet the full-wave coverage requirements, and achieve the effect of simple structure, easy implementation, and obvious broadband performance

Inactive Publication Date: 2014-03-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the defect that the broadband light source in the prior art cannot meet the full-wave coverage requirement, the present invention aims to provide an ultra-broadband light source based on Erbium-Thulium-Nd co-doped optical fiber that can cover the low-loss window of the full-wave optical fiber. The specific technical solution as follows:

Method used

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  • Er-Tm-Nd co-doped fiber ultra wideband light source
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  • Er-Tm-Nd co-doped fiber ultra wideband light source

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Embodiment 1

[0023] Such as figure 1 As shown, the ultra-broadband light source based on erbium, thulium and neodymium co-doped fiber includes a pump laser 1, a pump coupler 2 and an erbium, thulium and neodymium co-doped fiber 3, and the erbium, thulium and neodymium co-doped fiber 3 refers to the 1, neodymium rare earth ion optical fiber; the output end of the pump laser 1 is connected to the inlet of the pump coupler 2, and the outlet of the pump coupler 2 is connected to one end of the erbium thulium neodymium co-doped fiber 3, and the erbium thulium neodymium co-doped fiber The other end of the optical fiber 3 is the output end of the ultra-broadband light source based on the erbium, thulium and neodymium co-doped optical fiber 3 .

[0024] The pump laser 1 emits a single-wavelength pump light, and the pump light enters the erbium, thulium and neodymium co-doped optical fiber 3 after being coupled by the pump coupler 2, and the pumping light makes the erbium ions in the erbium, thuliu...

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Abstract

The invention provides an Er-Tm-Nd co-doped fiber ultra wideband light source which comprises a pump laser, a pump coupler and an Er-Tm-Nd co-doped fiber. The Er-Tm-Nd co-doped fiber is the fiber mixed with three rare earth ions of Er, Tm and Nd. The pump laser, the pump coupler and the Er-Tm-Nd co-doped fiber are successively connected. Pump light sent from the pump laser enters the Er-Tm-Nd co-doped fiber through the pump coupler, and broadband light is emitted from an output end. The invention has beneficial effects as follows: the structure is simple and easy to realize; and through appropriate selection of copping concentration of the three rare earth ions of Er, Tm and Nd and fiber length, broadband optical fiber covering all wave optical fiber low-loss window can be obtained so as to bandwidth of all wave optical fiber.

Description

technical field [0001] The invention belongs to the technical field of optical transmission, and in particular relates to an ultra-broadband light source based on erbium, thulium and neodymium co-doped optical fibers. Background technique [0002] At present, in terms of optical transmission technology, the main application is the low loss window of optical fiber from 1280nm to 1625nm. However, the matching broadband light source cannot meet the requirement of full-wave coverage. Although we can realize a broadband light source through a coupler, the insertion loss of the coupler increases the power cost of the system and reduces the transmission performance of the entire system. Therefore, the study of new broadband light sources is a key topic for optical fiber communication and even biomedical imaging. Contents of the invention [0003] In order to solve the defect that the broadband light source in the prior art cannot meet the full-wave coverage requirement, the pre...

Claims

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Application Information

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IPC IPC(8): H01S3/067
Inventor 姜淳孙璐张瑶晶
Owner SHANGHAI JIAO TONG UNIV
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