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Extinction ratio measurement device

A measuring device and extinction ratio technology, applied in the field of optical communication, can solve complex, expensive, and high-cost problems, and achieve the effect of fast measurement, low price, and large-scale production and application

Active Publication Date: 2012-07-18
CHENGDU SUPERXON COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the function of the oscilloscope is powerful, its cost is high, and it is too complicated and expensive for some simple applications that only need to measure the extinction ratio

Method used

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Embodiment Construction

[0013] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0014] Any feature disclosed in this specification (including any claims, abstract and drawings), unless specifically stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features. At the same time, the description of replacement features in this manual is a description of equivalent technical features, and shall not be regarded as a donation to the public.

[0015] If the terms in this specification (including any claims, abstracts and drawings) have both the general meaning and the specific meaning in this field, unless otherwise specified, they are all defined as the specific meaning in this field.

[0016] When measuring, i...

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Abstract

The invention discloses an extinction ratio (ER) measurement device. The characteristic that the high optical power P1 of a transmitter of an ordinary optical module is dozens of times low optical power P0 is utilized, and after an optical signal to be tested is converted into an electrical signal, an electrical signal representing 0 works in a linear amplification area of a transimpedance amplifier, and an electrical signal representing 1 works in a saturation area of the transimpedance amplifier; a saturated peak is filtered, an only the electrical signal representing 0 remains; the P0 is calculated by an upper computer; and then an ER can be simply calculated according to Pavg measured by an optical power meter. All devices used for the device are low in cost; and therefore, compared with an oscilloscope, the device can realize the rapid measurement of the ER with low cost, and is favorable for large-scale production and application.

Description

technical field [0001] The invention belongs to the field of optical communication, in particular to a device for measuring the extinction ratio of an optical module. Background technique [0002] The optical communication network is connected to the access network of the user terminal, and can be divided into AON (Active Optical Network, active optical network) and PON (Passive Optical Network, passive optical network) according to whether active devices are connected. Because PON has the characteristics of easy maintenance, easy installation and expansion, it has been widely used and has become the standard specification of the International Communications Union. [0003] The components that send and receive optical signals in optical network devices are called optical modules. The sending end of the optical module has an important index called ER (Extinction Ratio, extinction ratio). The so-called ER is the optical power P1 (high optical power) when the sending end o...

Claims

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Application Information

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IPC IPC(8): H04B10/08H04B10/071
Inventor 宋岩王一林李轩碧
Owner CHENGDU SUPERXON COMM TECH CO LTD
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