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Optical receiver module sensitivity estimation method and system

An optical receiving module and sensitivity technology, applied in the field of optical modules, can solve problems such as difficulty in sensitivity estimation, and achieve the effect of solving difficulty in estimation, being easy to handle, and easy to estimate.

Inactive Publication Date: 2017-12-12
HISENSE & JONHON OPTICAL ELECTRICAL TECH CO LTD
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Problems solved by technology

[0005] The invention provides a method for estimating the sensitivity of an optical receiving module, which solves the problem of difficulty in estimating the sensitivity

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  • Optical receiver module sensitivity estimation method and system
  • Optical receiver module sensitivity estimation method and system
  • Optical receiver module sensitivity estimation method and system

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Embodiment Construction

[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0041] The light receiving module sensitivity estimation method of the present embodiment mainly includes the following steps, see figure 1 shown.

[0042] Step S11: Based on the formula get formula

[0043] Among them, BER is the signal bit error rate; SNR is the signal-to-noise ratio; Sen is the sensitivity of the optical receiving module, and mW is the sensitivity unit; ρ is the photodiode responsivity, r e is the extinction ratio of the input signal, i n Enter the noise for the transimpedance amplifier.

[0044] Under a certain ambient temperature, the optical module uses a fixed photodiode and transimpedance amplifier, and the extinction ratio of the optical transmitter module remains unchanged, so Δ is a fixed value.

[0045] Step S...

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Abstract

The invention discloses an optical receiver module sensitivity estimation method and system. The optical receiver module sensitivity estimation method comprises the steps of: obtaining a formula (with reference to the specification); by taking 1g[-1g(BER)] as a variable and taking 101g(Sen.delta) as an independent variable, obtaining a curve; selecting a curve segment on the curve, and obtaining a fitting linear equation that y=ax+b; and obtaining a set value BER of an optical module and rho, re and in, calculating a sensitivity Sen, and obtaining an estimated value. The sensitivity estimation method disclosed by the invention breaks a conventional complex sensitivity estimation mode, simplifies a sensitivity estimation formula, is convenient for sensitivity estimation, solves the problem of difficulty in sensitivity estimation, carries out calculation on the sensitivity according to the obtained equation, is simple and convenient, does not need to consider a signal-to-noise ratio and is convenient to process.

Description

technical field [0001] The invention belongs to the technical field of optical modules, and in particular relates to a method and system for estimating the sensitivity of an optical receiving module. Background technique [0002] In the field of optical communication, the receiving sensitivity of an optical module refers to when the bit error rate meets the specified requirements, such as 10 -10 or 10 -12 , the minimum average optical power received by the optical receiving module is one of the key indicators to measure the performance of the optical receiving module. [0003] The current sensitivity calculation formula is: Among them, Sen is the sensitivity of the light receiving module, mW is the sensitivity unit; SNR is the signal-to-noise ratio; ρ is the photodiode responsivity, r e is the extinction ratio of the input signal; i n Enter the noise for the transimpedance amplifier. [0004] The premise of using this formula to estimate the sensitivity is to calculate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/079
CPCH04B10/0795H04B10/07953
Inventor 王晰聪谭先友
Owner HISENSE & JONHON OPTICAL ELECTRICAL TECH CO LTD
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