Tunable narrow linewidth laser frequency tuning efficiency measurement method and measurement system
A technology for frequency tuning and efficiency measurement, which is applied in optical radiation measurement, optical instrument testing, measuring devices, etc., can solve the problem of inability to measure the frequency tuning efficiency of tunable narrow linewidth lasers, and achieves simple structure, low cost, and convenient implementation Effect
Active Publication Date: 2022-07-15
BEIJING AUTOMATION CONTROL EQUIP INST
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[0004] The invention provides a method and a measurement system for measuring the frequency tuning efficiency of a tunable narrow linewidth laser, which can solve the technical problem that the frequency tuning efficiency of a tunable narrow linewidth laser cannot be measured in the prior art
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[0064] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0065] It should be noted that the terminology used herein is for the purpose of describing specific e...
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Abstract
The invention provides a method and a measurement system for measuring the frequency tuning efficiency of a tunable narrow linewidth laser, which utilizes an unbalanced arm Michelson interferometer to convert the slight optical domain frequency change of the tunable narrow linewidth laser to be measured into an optical phase change, In order to realize the measurement of the frequency change in the optical domain of the tunable narrow linewidth laser, and then realize the measurement of the frequency tuning efficiency of the tunable narrow linewidth laser. The technical solution of the present invention can measure the frequency change in the optical domain that is difficult to measure by conventional spectrometers. At the same time, the present invention utilizes the signal generator to output different frequencies f PGC and amplitude V PGC The frequency of the tunable narrow linewidth laser is modulated by the analog sine wave signal, so as to realize the measurement of the frequency tuning efficiency of the tunable narrow linewidth laser under different modulation bandwidths, and provide the basis for the practical use of the tunable narrow linewidth laser. . Further, the components in the measurement system of the present invention are all common components, with simple structure, convenient implementation and low cost.
Description
technical field [0001] The invention relates to the technical field of laser and optical fiber sensing, in particular to a method and a measurement system for measuring the frequency tuning efficiency of a tunable narrow linewidth laser. Background technique [0002] Tunable narrow linewidth laser is a widely used laser, it not only plays an important role in the field of optical communication, but also plays a huge role in the field of optical fiber sensing. New sensing systems with high sensitivity become possible. [0003] Phase-based optical fiber sensing systems have ultra-high precision and sensitivity, but there is a problem of random fading of sensitivity with phase. To overcome this problem, researchers propose a phase-generated carrier (PGC) technology. PGC technology is further subdivided into PGC internal modulation and demodulation and external modulation and demodulation technology. The PGC internal modulation and demodulation technology has attracted wide att...
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IPC IPC(8): G01M11/02G01M11/00G01J9/02
CPCG01M11/02G01M11/00G01J9/02G01J2009/0284
Inventor 陆星李鹏秦杰柏楠万双爱
Owner BEIJING AUTOMATION CONTROL EQUIP INST