Optical module and optical transmission device

Abstract

The invention discloses an optical module and an optical transmission device. The optical module comprises a substrate and also comprises an emission driving chip, a VCSEL laser, a receiving chip, a photodiode, a main control device, a host end electrical interface and an optical fiber interface which are arranged on the substrate, and the optical module further comprises a heating device used forheating the VCSEL laser and a temperature detection device used for detecting environment temperature. When the temperature detection device detects that the environment temperature is lower than a preset threshold value, the main control device controls the heating device to heat. According to the invention, the VCSEL laser is prevented from working in a low-temperature environment influencing the performance of the VCSEL laser, that is to say, in the low-temperature external environment, the working environment of the VCSEL laser is still kept at a proper temperature, the degradation phenomenon caused by the low-temperature environment is avoided such that the use environment of the device is expanded, and the device can be suitable for an outdoor industrial-grade temperature environment.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an optical module and an optical transmission device. Background technique [0002] With the continuous improvement of the 5G standard, the interface rate in the fronthaul direction is currently confirmed to be 25G, and some N*25G modules are used. Generally, the height of the signal tower does not exceed 100m. For the signal interconnection between the upper and lower towers, there is also a demand for SFP28-SR industrial-grade modules. [0003] The SFP28-SR modules currently on the market are all used in data centers and are commercial-grade modules. However, the current 25G optical chip cannot directly upgrade and replace the current module solution to an industrial level; it is limited by the performance of the VCSEL chip at the transmitter, and the VCSEL chip is sensitive to temperature. It is possible to make VCSEL chips support applications from -20°C to 90...

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Problems solved by technology

However, the current 25G optical chip cannot directly upgrade and replace the current module solution to an industrial grade; it is limited by the performance of the VCSEL chip at the transmitter, and the VCSEL chip is sensitive to temperature. It is possible to make VCSEL chips support applications from -20°C to 90°C; for applications in the industrial range from -40°C to 85°C, the application temperature difference in the low temperature direction is large, and it is impossible to directly optimize the Rf performance to compensate for the degradation of VCSEL chips. Thus limiting the use environment of the SFP28-SR module

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