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A high speed modulated semiconductor laser emitter module

A technology of laser emission module and laser module, which is applied in the direction of semiconductor lasers, lasers, phonon exciters, etc., can solve the problems of large volume, unstable power of feedback mode, etc., and achieve improved robustness, compact mechanism, and reduced volume Effect

Inactive Publication Date: 2019-01-08
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The embodiment of the present application provides a high-speed modulation semiconductor laser emitting module, which solves the problems of large volume of existing devices and unstable power in the feedback mode

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  • A high speed modulated semiconductor laser emitter module
  • A high speed modulated semiconductor laser emitter module
  • A high speed modulated semiconductor laser emitter module

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Embodiment Construction

[0020] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0021] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0022] figure 1 It is a schematic diagram of an embodiment of a stable working point of a semiconductor laser.

[0023] The embodiment of the present application proposes a high-...

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Abstract

The invention discloses a high-speed modulated semiconductor laser emitting module, which solves the problems of large volume of the existing device and unstable power of the feedback mode. High SpeedModulated Semiconductor Laser Emission Module, Including Comparison Circuit, Laser Module, Current-Voltage conversion module, modulation module, power module; A laser module is used for outputting laser light with stable frequency, receiving part of optical power, and generating photoelectric current through photoelectric conversion. A comparison circuit for comparing a voltage signal output by the current-voltage conversion module with a standard level to generate a feedback voltage which controls the on-current of the transistor in the comparison circuit and changes the working current of the laser module. The current-voltage conversion module is used for converting the photoelectric current generated by the laser module to generate a voltage signal varying with the laser output power.The modulating module changes the driving current of the laser module by using the modulating signal. The device of the present invention reduces the volume of the laser emitter, improves robustness,and facilitates system integration.

Description

technical field [0001] The present application relates to the technical field of high-speed laser communication, in particular to a high-speed modulation semiconductor laser transmitter module. Background technique [0002] Because the carrier frequency of the laser is very high, it can support a huge modulation bandwidth, so it can achieve a very high communication rate or measurement speed, which puts forward extremely high requirements for the laser modulation part. In addition, practical laser communication and laser measurement equipment require that the laser modulation module must have the characteristics of miniaturization and modular integration. At present, high-speed modulation laser modules include current direct modulation and external modulation. Among them, the laser module of the current direct modulation type mainly adopts a semiconductor laser that can support high-speed current modulation. By directly modulating the driving current of the semiconductor la...

Claims

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Application Information

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IPC IPC(8): H01S5/042
CPCH01S5/042H01S5/0427
Inventor 杨宏雷杨文哲王学运张升康王宏博
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT