As a sales of optical transceiver should know that the working temperature will influence the parameters of the optical transceiver.When the applied environment temperature of the module is changed, then the working current will change as the temperature changes.

At the same time, it will lead to changes in the parameters of the optical transceiver.Thus affecting the normal transmission of the optical transceiver.So how to control this problem?

Following is a brief introduction about how to control the normal transmission of the industrial optical transceiver.

Firstly,according to the application environment of the optical transceiver,it can be divided into the following two kinds:

Commercial optical transceiver:it is the most common and widely used product in the market,it’s working temperature is 0~70℃.

Industrial optical transceiver:it is applied in a relatively harsh environment,the difference of working temperature is big.It’s basic working condition is that it must meet the temperature requirement of - 40 ~ +85 ℃ .

So, how to do the most basic requirement of the industrial optical transceiver?Our company guarantees the stability of the industrial products from following points:

3、Temperature compensation software:The function of temperature compensation is to control the stable working current supply of the optical transceiver.When the temperature changes,the temperature compensation software will play it’s role at this time.

The technical engineer needs to spend a lot of time to do the temperature compensation.Increase or decrease every 5 degrees(or 10 degrees) as a node to calculate it’s slope.They need to write into to the corresponding IC(chip) of the optical transceiver after get the result.This work makes the technical engineer have to stay in front of the high and low temperature cycle aging box for a few hours or even longer.The increase in the raw material and the making cost,which is the cause of the high price of the industrial optical transceiver. The compared pictures of the working current before and after temperature compensation:

The eye diagram of optical transceiver on high temperature of 85 degrees without written temperature compensation(like picture 2) is abnormal.All the parameters of the optical transceiver are changed;After the temperature compensation is written,so that makes an abnormal eye diagram becomes a perfect eye diagram(like picture 3).The normal eye diagram should contain from “000” to “111”in all state group,8 states formed an eye diagram.

ETU-Link technology Co., Ltd as a professional manufacturer of optical transceiver,we are not only work hard on the selection of raw material for all industrial optical transceiver products,but also technically fuss(temperature compensation),to guarantee that our industrial products can maintain the normal transmission in the harsh environment.

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