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Variable wavelength output optic fibre laser

A technology for outputting optical fibers and lasers, applied in lasers, laser components, phonon exciters, etc., can solve problems such as transmission rate limitations, unstable performance, and complex structures, and achieve reduced size, improved stability, and extended band applications range effect

Inactive Publication Date: 2005-07-13
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, there is no relatively mature multi-channel variable wavelength output structure at present. The common method is to make single-wavelength (DBR-Distributed Bragg Reflector) lasers or fiber lasers into an array and package them together, which has complex structures and unstable performance. problems, and each wavelength requires a separate drive voltage or temperature control, etc.
Recently, tunable lasers based on mode locking have received a lot of attention, but this method has special limitations on the transmission rate. In recent years, AWG Arrayed Waveguide Grating (AWG Arrayed Waveguide Grating) technology has developed rapidly, and its performance and price have been improved. At the level of commercialization, arrayed waveguide grating AWG can be used as an integrated optical filter array, but the application of arrayed waveguide grating AWG to fiber laser has not yet been found

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  • Variable wavelength output optic fibre laser
  • Variable wavelength output optic fibre laser
  • Variable wavelength output optic fibre laser

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Embodiment Construction

[0011] like figure 1 As shown, the variable wavelength laser provided by the present invention includes a pump source, an optical coupler 1 , a fiber amplifier 2 , a polarization controller 3 , an optical switch 4 , an arrayed waveguide grating 6 , and an optical beam splitter 7 . The pump light generated by the pump source is input from one port of the optical coupler 1, coupled with the part of the output light separated by the optical beam splitter 7 input from the other port of the optical coupler 1, and then output to the fiber amplifier for further processing. Optical amplification, and then polarization adjustment through a polarization controller (PC--Polarization Controller) 3, under the action of the optical switch 4, the polarization-adjusted optical signal can output light of different wavelengths to the Arrayed Waveguide Grating (AWG, Arrayed Waveguide In the different channels 5 of Grating) 6, when a specific wavelength is input to the AWG, the filter tuning of t...

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Abstract

An optical fibre laser device with variable-wavelength output is mainly composed of pump source, optical coupler, polarizing controller, array waveguide (AWG) raster, and splitter, all of which are sequentially connected to form a loop. As the AWG is serially connected in said loop with doped optical fibre, the single pump source can amplify the variable wavelength. Its advantages are simple and compact structure, and high stability.

Description

technical field [0001] The invention relates to a fiber optic light source, in particular to a fiber optic light source with variable wavelength output, suitable for using amplified spontaneous emission (ASE) light as an auxiliary pump source. Background technique [0002] Broadband light sources have been studied continuously due to their many applications such as extension to gyroscopic sensors, light sources for testing optical components, and modulated spectra for general access networks. In particular, light sources utilizing ASE light from optical fibers doped with rare earth metals (such as erbium) are relatively good broadband light sources because they exhibit characteristics of wide band, high power, and low loss. For this erbium-doped optical fiber ( All research efforts made by EDF) broadband light sources are about the single band from 1520 to 1560 nanometers, that is, the C-band (C-Band). Most of the existing optical communication components and the traditional...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00G02F1/00H01S3/00H01S3/067H04B10/50
Inventor 刘玥李长春
Owner HUAWEI TECH CO LTD
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