Optical module capable of working in low-temperature environment and method for realizing work thereof

Abstract

The invention discloses an optical module capable of working in a low-temperature environment. The optical module comprises a heated element, a heating loop, a temperature sensor and a controller. The heating loop comprises a heating element, the heating element is a copper wire arranged on a printed circuit board, and the heating element is insulated from the heated element arranged near the heating element. The temperature sensor is used for detecting the real-time temperature near the heated element. A temperature lower limit is stored inside the controller, and the controller receives the real-time temperature of the temperature sensor and compares the real-time temperature with the stored temperature lower limit. If the real-time temperature is lower than the temperature lower limit, the controller controls breakover of the heating loop to enable the heating element to heat the heated element. The invention further provides a method for realizing work of the optical module. According to the optical module and the method, the heating effect of the copper wire itself in the controllable heating loop is used for heating the internal components of the optical module to increase the working temperature of the internal components, so that the working temperature of the whole optical module is increased; the manufacturing technology is simple, the cost is low, and practicability is high.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to an optical module that can work in a low-temperature environment and a method for realizing the work. Background technique [0002] The optical module is composed of optoelectronic devices, functional circuits and optical interfaces. The optoelectronic devices include two parts: transmitting and receiving. The transmitting part is: the electrical signal of a certain code rate is input and processed by the internal driver chip to drive the semiconductor laser (LD) or light-emitting diode (LED) to emit a modulated optical signal at a corresponding rate. It has an optical power automatic control circuit inside, so that The output optical signal power remains stable. The receiving part is: an optical signal with a certain code rate is input into the module and then converted into an electrical signal by a light detection diode. After the preamplifier, the electr...

AI Technical Summary

Problems solved by technology

This method is limited by the technological level, and it is difficult to improve in the short term

In addition, the existing technology also supports the installation of heating components and thermocouples inside the optical device TOSA to increase the operating temperature range of the optical device in the optical module, but this technology requires high manufacturing processes and costs

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