Unlock instant, AI-driven research and patent intelligence for your innovation.

Multi-wavelength fiber laser with stable optical signal-to-noise ratio and adjustable optical signal-to-noise ratio

A technology of fiber laser and optical signal-to-noise ratio, which is applied in the field of instrumentation and optical fiber communication, and can solve problems such as high cost and complex system structure

Pending Publication Date: 2022-05-13
BEIJING JIAOTONG UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, lasers with different wavelengths were used to realize multi-wavelength light sources, which not only complicated the system structure, but also cost a lot

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-wavelength fiber laser with stable optical signal-to-noise ratio and adjustable optical signal-to-noise ratio
  • Multi-wavelength fiber laser with stable optical signal-to-noise ratio and adjustable optical signal-to-noise ratio
  • Multi-wavelength fiber laser with stable optical signal-to-noise ratio and adjustable optical signal-to-noise ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: as figure 1 , figure 2 and image 3 As shown, a stable optical signal-to-noise ratio adjustable multi-wavelength fiber laser, the pump source 1 is connected to one end of the first input end of the beam combiner 2, and the output end 21 of the beam combiner 2 is connected to one end of the thulium-doped fiber 3 The other port 31 of the thulium-doped fiber 3 is connected to the input end of the isolator 4, and the output port 41 of the isolator 4 is connected to one end of the polarization controller 5 based on the few-mode fiber, and the polarization controller 5 based on the few-mode fiber The other port 51 is connected with one end of the polarization controller-6 based on the single-mode fiber, and the other end 61 of the polarization controller-6 based on the single-mode fiber is connected with the input end of the polarizer 7, and the output of the polarizer 7 Port 71 is connected with one end of polarization controller 2 8 based on single-mode fib...

Embodiment 2

[0022] Embodiment 2: as figure 1 , figure 2 and image 3 As shown, a stable multi-wavelength fiber laser with adjustable optical signal-to-noise ratio, the access position of the polarization controller 5 based on the few-mode fiber can be located between the coupler 10 and the highly nonlinear fiber 9. At this time, the output end of the isolator 4 is directly connected to the polarization controller-6 based on a single-mode fiber.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multi-wavelength optical fiber laser with stable optical signal-to-noise ratio and adjustable performance, and belongs to the technical field of optical fiber communication, instruments and meters. A few-mode optical fiber filter is wound on a rotating paddle of a polarization controller, the wavelength interval of the laser is determined by the length of a few-mode optical fiber wound on the rotating paddle of the polarization controller, the stability is ensured by a nonlinear polarization rotation effect, and multi-wavelength output is a high nonlinear optical fiber. The adjustable optical signal-to-noise ratio output is realized by rotating the rotating paddle of the polarization controller based on the few-mode fiber. The problem that the signal-to-noise ratio of the output light cannot be conveniently adjusted when a plurality of fiber lasers realize multi-wavelength output at present is solved.

Description

technical field [0001] The invention relates to a stable multi-wavelength optical fiber laser with an adjustable optical signal-to-noise ratio, belonging to the technical fields of optical fiber communication and instrumentation. Background technique [0002] A multi-wavelength fiber laser refers to a fiber laser that can output multiple wavelengths. As the core light source device of optical communication, multi-wavelength fiber lasers are widely used in dense wavelength division multiplexing system DWDM. Previously, lasers with different wavelengths were used to realize multi-wavelength light sources, which not only complicated the system structure, but also made the cost higher. Due to its small size, high pumping efficiency, good heat dissipation, and convenient connection with the fiber optic system, the multi-wavelength fiber laser can greatly simplify the system structure, because only one laser can output multiple lasing wavelengths. With large capacity, high speed...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/08
CPCH01S3/08013H01S3/06712
Inventor 秦齐延凤平刘艳冯亭李挺郭颖程丹于晨昊杨丹丹王向东
Owner BEIJING JIAOTONG UNIV