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Mach-Zehnder optical fiber interferometer stable control system

A fiber optic interferometer and stable control technology, applied in the direction of instruments, optics, nonlinear optics, etc., can solve problems such as unstable work, achieve the effect of simple implementation and overcome unstable work

Inactive Publication Date: 2015-10-21
JINLING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Overcome the problem that the existing Mach-Zehnder fiber optic interferometer cannot work stably due to environmental vibration

Method used

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  • Mach-Zehnder optical fiber interferometer stable control system
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  • Mach-Zehnder optical fiber interferometer stable control system

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0019] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0020] The system structure diagram of the present invention is as figure 1 As shown, the Mach-Zehnder fiber optic interferometer stabilization control system includes a fiber coupler with a splitting ratio of 90:10, a photodetector, a bias control circuit and a phase modulator. The input end of the fiber coupler is connected to the Mach-Zehnder fiber optic interferometer, the output end of the fiber coupler is...

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Abstract

The invention discloses a Mach-Zehnder optical fiber interferometer stable control system comprising a Mach-Zehnder optical fiber interferometer, an optical fiber coupler, a photoelectric detector, a bias control circuit and a phase modulator. An input end of the optical fiber coupler is connected with the Mach-Zehnder optical fiber interferometer; an output end of the optical fiber coupler is connected with an input end of the photoelectric detector; an output end of the photoelectric detector is in a connection with an input end of the bias control circuit; an output end of the bias control circuit is in a connection with an input end of the phase modulator; and the phase modulator is arranged on one arm of the Mach-Zehnder optical fiber interferometer. The Mach-Zehnder optical fiber interferometer stable control system is simply structured; and the Mach-Zehnder optical fiber interferometer is formed by a polarization maintaining fiber coupler and an optical fiber delay line to overcome unstable work of the present Mach-Zehnder optical fiber interferometer.

Description

technical field [0001] The invention discloses a Mach-Zehnder optical fiber interferometer stabilization control system, which relates to the technical field. Background technique [0002] Mach-Zehnder fiber optic interferometer (MZI) is an instrument made by the principle of light interference. It has the advantages of small size, light weight, compact structure, good insulation, anti-electromagnetic interference and high sensitivity, and has been paid more and more attention. Mach-Zehnder fiber optic interferometers have been widely used in all-fiber sensor measurement systems for pressure magnetic field, refractive index, micro-vibration, micro-displacement, laser phase noise, frequency noise, etc., and optical fiber communication systems for optically carrying millimeter waves and microwaves. The Mach-Zehnder fiber optic interferometer is an important device to realize the phase-to-amplitude conversion of the phase modulation optical link, and its performance is the prem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/225
CPCG02F1/2252
Inventor 叶全意
Owner JINLING INST OF TECH