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High-speed PON/optical module receiving avalanche diode test method

An avalanche diode and testing method technology, which is applied in photometry, optical radiation measurement, single semiconductor device testing, etc., can solve problems such as limited sensitivity, and achieve the effect of avoiding unnecessary losses

Pending Publication Date: 2021-04-06
SICHUAN TIANYI COMHEART TELECOM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of this kind of optical power meter is that the spectral response curve is flat and the cost is low, but its sensitivity is very limited, and generally it can only respond to the pw level at most

Method used

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  • High-speed PON/optical module receiving avalanche diode test method

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Embodiment

[0037] In the prior art, the commonly used optical power meter mainly uses the resistance value or current change of the photosensitive or heat-sensitive device to realize the measurement of optical power, that is, when facing light sources with different powers, it will output different currents with the change of optical power , to detect the optical power through the current. The advantage of this kind of optical power meter is that the spectral response curve is flat and the cost is low, but its sensitivity is very limited, and generally it can only respond to the pw level at most. Even the improved light detection device based on avalanche photodiode (APD) can only be used for photon counting, detecting photon "presence" or "absence", but cannot directly distinguish the strength of the light signal, so how to use the APD in the avalanche state Power detection with high sensitivity and improvement of detection accuracy are very important issues at present.

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Abstract

The invention discloses a high-speed PON / optical module receiving avalanche diode test method. The method comprises is characterized in that corresponding detection devices are arranged for the temperature, the reverse bias voltage and the pulse required by normal work of the avalanche diode and the avalanche state of the avalanche diode, and a working state of the avalanche diode can be mastered in real time; meanwhile, a corresponding judgment device is further arranged, secondary judgment is carried out in the judgment process, unnecessary losses caused by the fact that follow-up actions completely belong to invalid misoperation due to accidental errors of the judgment device are avoided, and adjustment accuracy of temperature, reverse bias voltage, pulses and the like is greatly improved. Through cooperation of the timing device and the alarm device, whether each adjustment link has a fault or not can be mastered in real time, and an alarm is given when a related adjustment fault occurs; and on-site workers can timely discover exception handling exception, so subsequent unnecessary loss is avoided.

Description

technical field [0001] The invention belongs to the technical field of optical power detection, and in particular relates to a high-rate PON / optical module receiving avalanche diode testing method. Background technique [0002] At present, the commonly used optical power meter mainly uses the resistance value or current change of photosensitive or heat-sensitive devices to realize the measurement of optical power, that is, when facing light sources with different powers, it will output different currents with the change of optical power. to detect the optical power. The advantage of this kind of optical power meter is that the spectral response curve is flat and the cost is low, but its sensitivity is very limited, and generally it can only respond to the pw level at most. Even the improved light detection device based on avalanche photodiode (APD) can only be used for photon counting, detecting photon "presence" or "absence", but cannot directly distinguish the strength of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/44G01R31/26
CPCG01J1/44G01J2001/4466G01R31/2601
Inventor 李超群唐兴刚何芯锐白亚岚
Owner SICHUAN TIANYI COMHEART TELECOM
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