Tunable laser

A technology for tuning lasers and refrigerators, applied in the field of lasers, to achieve the effects of uncomplicated structure and installation, low development cost and high process precision

Pending Publication Date: 2021-08-03
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention proposes a tunable laser, aiming to solve the problem of tunable laser tuning design and manufacture

Method used

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0036] It should be noted that if there are directional indications involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture. If the specific posture changes , then the directional indication changes accordingly.

[0037] In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated...

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Abstract

The invention provides a tunable laser. The tunable laser comprises a packaging tube shell, a refrigerator, a heat sink cushion block and a resonant cavity structure. A packaging cavity is formed in the packaging tube shell, and an output end is formed on one side of the packaging tube shell; the refrigerator is mounted on the bottom wall surface of the packaging cavity; the heat sink cushion block is installed on the end face of the refrigerator, and an installation face is formed on the end face, back to the refrigerator, of the heat sink cushion block. The resonant cavity structure comprises a Bragg grating, a coupling lens and a gain chip which are sequentially installed on the installation surface in the direction away from the output end. A resonant cavity structure is arranged in the packaging cavity, a tunable function is realized by utilizing a thermo-optic effect of the manufactured Bragg waveguide grating of the integrated electrode, and single-frequency narrow-linewidth and low-noise laser output can be realized by virtue of a reflection characteristic of the Bragg waveguide grating; the Bragg grating serves as a reflecting surface and forms a resonant cavity of the laser together with the gain chip, the development cost is low, the process precision is high, the structure installation is not complex, the product consistency is good, and the laser is suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a tuneable laser. Background technique [0002] As various industries in society are about to enter the era of intelligence, people have put forward higher requirements for the performance of lasers. For example, related fields such as coherent spectral analysis, coherent optical communication, optical fiber sensing, and optical measurement have stricter requirements on the linewidth and frequency noise of lasers. Higher optical power and narrower linewidth can improve the transmission capacity of coherent communication systems and the test accuracy of optical measurement systems. In the optical fiber sensing system, the system not only requires the light source to have a narrow linewidth, but also requires high frequency stability. In order to achieve the advantages of low noise, narrow linewidth, small volume, low cost and long life, the narrow linewidth external cavity semiconductor la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/14H01S5/068H01S5/024H01S5/02216
CPCH01S5/14H01S5/06817H01S5/02407H01S5/02476H01S5/02216
Inventor 尹小杰吴丹张家顺王亮亮王玥安俊明
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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