Fiber-integrated Mach-Zehnder optical switch based on miniature piezoelectric transducer array
A technology of piezoelectric energy conversion and transducer, which is applied in light guides, optics, instruments, etc., and can solve problems such as large volume, unfavorable integration of optical fiber devices, and inflexible modulation methods
Inactive Publication Date: 2019-04-02
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology
However, the driving transducer of this type of bulk stacked piezoelectric ceramic is relatively large, which is not conducive to the integration of optical fiber devices.
Also considering the volume factor, this type of interferometer is often driven by a single stacked piezoelectric ceramic, and the modulation method is not flexible enough
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[0035]The present invention will be further described below in conjunction with specific examples.
[0036] figure 1 A schematic diagram of the structure of a fiber-integrated Mach-Zehnder optical switch based on a micro piezoelectric transducer array is given. It includes a double-core optical fiber 1, a 3dB coupler 2, a bottom electrode array 3, a piezoelectric ceramic array 4, and an upper electrode array 5.
[0037] In order to realize the present invention, the applicant firstly prepared a photosensitive piezoelectric ceramic ink that can be used for photocuring piezoelectric ceramics. Select nano-scale lead zirconate titanate (PZT) powder, photosensitive resin and dispersant, mix them according to the corresponding proportion, place them in a planetary ball mill for uniform stirring, and prepare the required photosensitive piezoelectric ceramic ink.
[0038] The specific fabrication process of the fiber-integrated Mach-Zehnder optical switch based on the piezoelectric...
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The invention provides a fiber-integrated Mach-Zehnder optical switch based on a miniature piezoelectric transducer array. To be specific, two 3dB couplers are prepared at two ends of a double-core fiber to construct a fiber-integrated Mach-Zehnder interferometer on two core optical paths of the double-core fiber; and a miniature piezoelectric transducer array is prepared between the two 3dB couplers to serve as a modulation unit. The miniature piezoelectric transducer array is prepared at the proper position on the surface of the double-core fiber, spatial distributed extrusion is carried outon the fiber under the effect of an externally applied programmable voltage signal, and a phase difference is generated between the output light waves of two-path channels of the interferometer due to the refractive index modulation caused by extrusion. With the selected voltage coding input, rapid switching of the two kinds of phase differences is realized and thus the fiber-integrated optical switch function is realized. The fiber-integrated Mach-Zehnder optical switch can be widely applied to the field of integrated optical devices and optical fiber communication.
Description
(1) Technical field [0001] The invention relates to the field of optical fiber integrated devices, in particular to a fiber integrated Mach-Zehnder optical switch based on a miniature piezoelectric transducer array. (2) Background technology [0002] An optical switch is a device with one or more selectable transmission ports, which can perform mutual conversion or logical operation on optical signals in optical transmission lines or integrated optical circuits. Compared with other optical switches, there is no space optical path, and it is easy to connect with an all-fiber network. [0003] The dual-core optical fiber integrates two cores into one optical fiber, so that the optical path can be relatively stable, and the impact of environmental factors such as vibration and temperature on the optical path can be effectively reduced. The Mach-Zehnder interferometer based on extruded dual-core fiber has the advantages of stable performance and fast modulation rate, and is gen...
Claims
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Login to View More IPC IPC(8): G02B6/35
CPCG02B6/354G02B6/3578
Inventor 苑立波马超
Owner GUILIN UNIV OF ELECTRONIC TECH