A method for automatically controlling the extinction ratio of a photoelectric conversion module

Abstract

The invention discloses an automatic control method for the extinction ratio of a photovoltaic conversion module. The photovoltaic conversion module comprises a main control unit (MCU), a laser driver, a limiting amplifier, a photovoltaic-conversion-module electrical interface, a light receiving assembly (ROSA) and a light emitting assembly (TOSA). The ROSA, the limiting amplifier, the photovoltaic-conversion-module electrical interface, the laser driver and the TOSA are sequentially connected, and the MCU is respectively connected with the photovoltaic-conversion-module electrical interface, the limiting amplifier and the laser driver. The automatic control method is simple in manufacturing technology, convenient and efficient, and time occupied by a device is shortened; the consistency of the extinction ratio of mass-manufactured photovoltaic conversion modules is high, and the quality of high-speed products can be better guaranteed.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to an automatic control method for the extinction ratio of a photoelectric conversion module. Background technique [0002] Optical fiber communication is more and more widely used in the field of industrial control. The working characteristics of the laser industrial grade (-40 ~ 85 ℃) environment determine that the failure rate of the photoelectric conversion module will increase in the high temperature environment for a long time. High temperature resistant, mature and stable photoelectric conversion modules have become the industry's buying point and the focus of market promotion. The high-speed photoelectric conversion module has high requirements on the extinction ratio, and the adjustment range of the extinction ratio is narrow. Due to the discreteness of lasers in mass production, it will inevitably lead to the difficulty of controlling the extinction ratio consistency ...

AI Technical Summary

Problems solved by technology

Due to the discrete nature of lasers in mass production, it will inevitably lead to the difficulty of controlling the extinction ratio consistency of photoelectric conversion modules in mass production

[0003] Problems and shortcomings of the existing technology: the laser of the high-speed photoelectric conversion module needs to compensate and adjust the working current as the temperature changes. The current mainstream solution is that the main controller MCU realizes it through the lookup table data LUT (LookUp Table)

The above production process is inefficient, time-consuming and labor-intensive, and it is difficult to meet the needs of mass production

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