Transient Short Optical Pulse Gain Compression Intercepting Waveform Sampling Method

A waveform sampling and gain compression technology, applied in instruments and other directions, can solve the problems of high requirements for sampling control pulse sources, difficult equipment calibration, etc., to achieve the effects of excellent cost and reliability, easy debugging, and easy implementation.

Inactive Publication Date: 2011-12-28
DONGHUA UNIV +1
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Problems solved by technology

However, these sampling methods have high requirements on the sampling control pulse source, and equipment calibration is difficult

Method used

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  • Transient Short Optical Pulse Gain Compression Intercepting Waveform Sampling Method
  • Transient Short Optical Pulse Gain Compression Intercepting Waveform Sampling Method
  • Transient Short Optical Pulse Gain Compression Intercepting Waveform Sampling Method

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Embodiment Construction

[0017] In order to make the present invention more comprehensible, a preferred embodiment is described in detail below with accompanying drawings.

[0018] combine figure 1 , a kind of transient short optical pulse semiconductor optical amplifier gain compression interception type waveform sampling method provided by the present invention, its steps are:

[0019] Step 1. The measured transient short optical pulse passes through a controllable optical delay line to match the external timing. After completing this process, it is amplified by a semiconductor optical amplifier (GC-SOA) whose gain fluctuation is clamped. At the same time, the amplifier plays the role of an optical switch under the action of an external electrical control signal, which is used to turn off the input of subsequent optical signals after the measured transient short optical pulse is input into the system and before the sampling process is completed, so as to avoid causing damage to the sampling process...

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Abstract

The invention provides a gain compression and interception waveform sampling method for a transient short optical pulse semiconductor optical amplifier. , the sequence pulse amplitudes are arranged according to a fixed attenuation ratio. Then, according to the pulse sequence timing determined by the length of the passive optical fiber loop, the pulse is intercepted by the semiconductor optical amplifier. The intercepted pulse waveform is sent to a PIN photocell with a bandwidth of 100 megabytes, and then the data acquisition card is used to measure the output pulse amplitude of the PIN photocell to obtain the energy envelope of the intercepted pulse, and then combine the passive fiber ring pulse to copy. The original transient short optical pulse waveform is reversed by the replica amplitude variation law of the generator. The method provided by the invention adopts a simple system structure, low equipment requirements, easy debugging and integration, and can be used as an effective means for measuring transient short light pulses.

Description

technical field [0001] The invention relates to a method for measuring optical waveforms, in particular to an intercepting optical sampling method based on the gain compression effect in semiconductor optical amplifiers and which can be used for measuring transient short optical pulse waveforms. Background technique [0002] The transient short optical pulse is a single optical pulse with a half-wave full width of the time-domain waveform less than nanoseconds or a sequence of optical pulses with a longer period. Under the premise that the interval between each pulse in the pulse sequence is quite different or the waveform of each pulse is unstable, the measurement of a single pulse in the pulse sequence can also be equivalent to the measurement of a transient short light pulse. Commercially available high-speed commercial optical sampling oscilloscopes or real-time oscilloscopes usually sell for hundreds of thousands of RMB or more due to internal design constraints, and it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J11/00
Inventor 杨义肖中银葛华勇许文凯
Owner DONGHUA UNIV
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