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A soa-based ultra-narrow linewidth fdml ring laser

A ring laser and ultra-narrow linewidth technology, which is applied to lasers, laser components, phonon exciters, etc., can solve the problem that the scanning frequency is difficult to increase, and achieve the effect of increasing the wavelength scanning speed

Inactive Publication Date: 2016-08-24
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Every time the transmission wavelength of the filter is changed, the laser must re-establish a stable operating mode. Therefore, the time from spontaneous radiation to laser formation limits the wavelength scanning speed, which is difficult to increase the scanning frequency of traditional wavelength scanning lasers. a major bottleneck

Method used

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  • A soa-based ultra-narrow linewidth fdml ring laser
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  • A soa-based ultra-narrow linewidth fdml ring laser

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Embodiment Construction

[0039] 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.

[0040] (1) Performance test of ring cavity scanning laser and realization of stimulated Rayleigh scattering

[0041] The embodiment of the present invention provides an SOA-based ultra-narrow linewidth FDML ring laser. First, build a fiber ring cavity scanning laser 100, such as figure 1 As shown, it includes: a semiconductor optical amplifier SOA 101 , a first optical isolator 1021 , a second optical isolator 1022 , a tunable filter 103 , and a coupler 104 ....

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Abstract

The embodiment of the invention provides an ultra-narrow line-width FDML ring-shaped laser based on an SOA. According to the ultra-narrow line-width FDML ring-shaped laser based on the SOA, a ring-shaped cavity is formed by an optical isolator, the semiconductor optical amplifier (SOA), a tunable filter, a first coupling device, a feedback loop, a second coupling device and a first single mode fiber loop. The feedback loop comprises an optical circulator, a high Rayleigh scattering fiber loop, a tunable attenuator, a third single mode fiber loop, a first polarization controller, a fourth single mode fiber loop and a second polarization controller. The ultra-narrow line-width FDML ring-shaped laser based on the SOA has the advantages of being ultra-narrow in line-width and tunable in wave length.

Description

technical field [0001] The invention relates to the fields of optical fiber communication and optical fiber measurement, in particular to a SOA-based ultra-narrow linewidth FDML ring laser. Background technique [0002] Fourier Domain Mode Locking (FDML for short) represents a new laser working state. Completely different from the traditional mode-locking mechanism of amplitude modulation or phase modulation, FDML is a mode-locking method of spectrum modulation. FDML laser output laser with continuous scanning frequency, can output ultra-short laser pulse sequence through compression, and all scanning frequency information can be The form of light is stored in a laser cavity (usually a ring cavity). FDML is also a wavelength-swept laser (WSL for short) in the usual sense, which realizes high-speed continuous wavelength scanning in a certain wavelength range, and instantaneously outputs laser with high peak power and narrow linewidth. [0003] Narrow linewidth lasers have t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/10
Inventor 王甫王智李强王哲
Owner BEIJING JIAOTONG UNIV
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