A method of tuning chirped fiber grating based on plzt

A technology of chirped fiber gratings and fiber gratings, applied in the direction of optical fiber transmission, eliminating distortion/dispersion, etc., can solve problems such as hysteresis effect and oscillation, and achieve fast response, large tuning range, and easy implementation

Active Publication Date: 2019-01-15
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, some of these tuning methods have different degrees of hysteresis effects, some are limited by the size of the space, and some are extremely susceptible to electromagnetic field interference to generate oscillations.

Method used

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  • A method of tuning chirped fiber grating based on plzt
  • A method of tuning chirped fiber grating based on plzt
  • A method of tuning chirped fiber grating based on plzt

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Experimental program
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Embodiment 1

[0038] The central reflection wavelength of the linearly chirped fiber grating 6 tested in the experiment is 1550.9nm, the spectral width is 2nm, and the grating length is 10mm; the central wavelength of the wide-spectrum laser 1 is 1550.9nm, and the half-maximum spectral width is 69nm; the size of the PLZT ceramic sheet 5 is : 15mm×5mm×0.8mm (length, width, thickness); the size of the light source of the ultraviolet lamp 4 is: 30mm×20mm (length, width), and the maximum light intensity is 6000mW / cm 2 . Its test equipment such as figure 1 As shown, the method steps are:

[0039] Step 1: Build an experimental device based on PLZT ceramic chip tuning chirped fiber grating:

[0040] Use epoxy glue to glue the linear chirped fiber grating 6 horizontally on the middle position of the upper surface of the PLZT ceramic sheet 5 along the length direction; place the ultraviolet lamp 4 directly above the upper surface of the PLZT ceramic sheet 5 so that the output port of the light sou...

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Abstract

The invention discloses a chirp fiber bragg grating tuning method based on PLZT. The method comprises the steps that a chirp fiber bragg grating tuning experimental device based on a PLZT ceramic chip is constructed; a linear chirp fiber bragg grating is adhered to the upper surface of the PLZT ceramic chip; an ultraviolet lamp is placed above the PLZT ceramic chip; a wide-spectrum laser is connected with the first port of an optical circulator; the second port of the optical circulator is connected with the input end of the linear chirp fiber bragg grating; the third port of the optical circulator is connected with a spectral analyzer; the PLZT ceramic chip is irradiated by the ultraviolet lamp; by controlling the light intensity and light time, the deformation of the PLZT ceramic chip is changed; the chirp fiber bragg grating is tuned in real time. The chirp fiber bragg grating tuning method provided by the invention is not affected by an electromagnetic field, is not limited by the space size, and has the advantages of high precision, large tuning range and low cost.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and in particular relates to a method for tuning a chirped optical fiber grating based on PLZT. Background technique [0002] Lanthanum-modified lead zirconate titanate (PLZT) ceramics, as an intelligent photodeformable material, can directly convert light energy into mechanical energy, and produce deformation under the irradiation of ultraviolet light, eliminating the intermediate mechanical energy transmission error, which can realize Remote light-controlled non-contact drive, and free from electromagnetic interference, these characteristics make PLZT ceramic chips have a wide range of application prospects in the field of micro-light drive. [0003] Chirped fiber gratings, as the core device in optical delay devices, have attracted widespread attention from scholars at home and abroad. As for the tuning of chirped fiber grating, it is the key point in the process of studyi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/25H04B10/2507
CPCH04B10/25H04B10/2507
Inventor 马骏王朕王新杰朱日宏
Owner NANJING UNIV OF SCI & TECH
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