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Optical module

An optical module and optical detector technology, applied in the field of optical communication, can solve the problems of poor control accuracy and high cost

Active Publication Date: 2017-01-18
HISENSE BROADBAND MULTIMEDIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of poor control accuracy and high cost due to the inability to continuously control the existing optical module when the level amplitude output by the radio frequency signal amplification module is automatically controlled, and to provide an optical module

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Embodiment Construction

[0019] The present invention will be further described below with reference to the accompanying drawings and exemplary embodiments, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions . The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Also, detailed descriptions of known arts will be omitted if they are unnecessary to illustrate the features of the present invention.

[0020] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, ele...

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Abstract

The invention relates to the optical communication technology field and especially relates to an optical module. The optical module comprises a photodetector, an analogue amplifier, a sampling circuit and a voltage-controlled attenuator. A signal input terminal of the analogue amplifier is electrically connected to a signal output terminal of the photodetector and the analogue amplifier is used for amplifying an electric signal output by the photodetector. The sampling circuit is electrically connected to a second signal output terminal of the analogue amplifier and is used for sampling a level amplitude output by the analogue amplifier. The voltage-controlled attenuator is served as a feedback circuit and is electrically connected between the signal input terminal and a first signal output terminal of the analogue amplifier, and a voltage control terminal is electrically connected to an output terminal of the sampling circuit. And the voltage-controlled attenuator is used for adjusting the level amplitude output by the analogue amplifier according to a sampling voltage output by the sampling circuit. The level amplitude output by the analogue amplifier is accurately and automatically controlled, single-chip microcomputer and other chips do not need to be used and cost is low.

Description

[0001] 【Technical field】 [0002] The present invention relates to the technical field of optical communication, and in particular, to an optical module. [0003] 【Background technique】 [0004] An optical module is an active optoelectronic device that realizes optical-electrical conversion and electrical-optical conversion, and is an important functional module of optical communication equipment. In the optical module communication system, a radio frequency signal amplification module is usually integrated, and the radio frequency signal is more sensitive than the digital signal, and will change with the optical power received by the optical module. When the optical power changes by 1dB, the amplitude of the RF signal will change by 2dB or more; environmental factors such as the distance of the transmission distance and the quality of the optical fiber wiring will affect the optical power finally received by the optical module, which will lead to the failure of the RF signal a...

Claims

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Application Information

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IPC IPC(8): H04B10/40
CPCH04B10/40
Inventor 刘璐
Owner HISENSE BROADBAND MULTIMEDIA TECH