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A Measurement Method of Wavelength Tuning Amount of High Precision Tunable Optical Filter

A measurement method and wavelength tuning technology, which is applied in the field of measurement of the wavelength tuning amount of high-precision tunable optical filters, can solve problems such as the inability to measure changes in optical wavelengths, and achieve adjustable measurement sensitivity, high stability, and high precision. Effect

Active Publication Date: 2021-01-26
中山市威晟光通科技有限公司
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Problems solved by technology

In these applications, the central wavelength resolution of the tunable optical filter is required to be below 0.01nm, and commonly used optical wavelength measurement instruments and methods such as spectrometers cannot measure changes in light wavelengths less than 0.01nm

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  • A Measurement Method of Wavelength Tuning Amount of High Precision Tunable Optical Filter

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Embodiment Construction

[0034] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0035] A method and device for measuring the wavelength tuning amount of a high-precision tunable optical filter, using microwave photon technology and dispersive fiber to amplify the change of the phase of the optical carrier microwave caused by the change of the wavelength of the optical carrier to realize the wavelength tuning amount of the tunable optical filter The measurement; the wavelength shift resolution of the measurement system can be adjusted arbitrarily by changing the frequency of the signal source and the length of the dispersion fiber and selecting a dispersion fiber with a large dispersion coefficient. At the same time, a microwave IQ mixer is used for...

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Abstract

The invention relates to a method for measuring the wavelength tuning quantity of a high-precision tunable optical filter, which can solve the problems of low sensitivity and precision and low stability of measurement results of the existing wavelength tuning quantity measurement system. The present invention uses a high-precision tunable optical filter wavelength tuning amount measurement device, utilizes microwave photon technology and dispersive fiber to amplify the change of the optical carrier microwave phase caused by the change of the optical carrier wavelength, and realizes the wavelength tuning amount of the tunable optical filter. The method has the advantages of adjustable measurement sensitivity, high precision and simple measurement method.

Description

technical field [0001] The invention belongs to the electronic measurement field of filtering performance test of an adjustable optical filter with an ultra-small wavelength shift amount, and in particular relates to a method for measuring the wavelength tuning amount of a high-precision adjustable optical filter. Background technique [0002] In the all-optical network, the optical filter is an important device to realize optical wavelength division multiplexing. As a branch of it, the research and application of tunable optical filter technology has always been a very attractive topic. The appliance has the characteristics of simple control, low modulation voltage, large optical attenuation range and continuous adjustment, and has a good application prospect in future optical communication systems. [0003] High-precision tunable optical filters are widely used in the generation of optical frequency combs, microwave photon single-sideband modulation, and microwave photon f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/079H04B10/2513H04B10/54
CPCH04B10/079H04B10/2513H04B10/54
Inventor 肖世涛
Owner 中山市威晟光通科技有限公司
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