Method for preparing dual hole polarized optical fibre phase regulator and products thereof

A phase modulator and optical fiber technology, applied in the field of optical information, can solve problems such as difficulties, and achieve the effects of small insertion loss, reduced loss, and simple coupling

Inactive Publication Date: 2008-11-19
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the metal wires reach a thickness of 20-30 microns, they will show fiber characteristics, and they will be very soft. At this time, it will become very difficult to insert them into a micropore smaller than 40 microns, and the general insertion length is not large. over 10 cm, the known insertion length is only 2 cm (T. Fujiwara, D. Wong, Y. Zhao, S. Fleming, S. Poole, "Electro-optic modulation in germanosilicate fiber with UV-excited poling", ELECTRONICS LE77ERS Vol.31, pp573-574)

Method used

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  • Method for preparing dual hole polarized optical fibre phase regulator and products thereof
  • Method for preparing dual hole polarized optical fibre phase regulator and products thereof
  • Method for preparing dual hole polarized optical fibre phase regulator and products thereof

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Embodiment Construction

[0024] The present invention will be described in detail below through preferred embodiments in conjunction with the accompanying drawings.

[0025] In this example, the double-hole optical fiber used was manufactured by the 46th Research Institute of China Electronics Technology Group Corporation, with a core size of 6.6×7.9 μm 2 (Oval), the aperture is about 28 microns, and the loss is 0.4dB / m. Its cross-sectional view is shown in Figure 1(a).

[0026] The electrode material must meet the following requirements: good electrical conductivity; sufficiently thin and uniform in thickness; high hardness and not easy to bend. Therefore, tungsten wire is selected as the electrode in this embodiment. A large number of experiments have proved that the tungsten wire will become very soft when the diameter is about 20 microns, which is not suitable for perforation. In this embodiment, the tungsten wire used is a commercially available tungsten wire with a diameter of 28 microns.

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Abstract

The invention relates to diplopore polarized optical fiber phase modulator manufacturing method. It includes the following steps: inserting one end of the diplopore polarize optical fiber into the injector needle port and sealing, injecting hydrofluoric acid into the optical fiber micro-pore, enlarging the micro-pore to the need size by corrosion; putting the optical fiber into protective sleeve, exposing the need part, putting into hydrofluoric acid to corrode and gain two edge boring interlinked with the micro-pore; inserting tungsten filament into the micro-pore as electrode; adding high pressure to process heat polarizing. The produced diplopore polarized optical fiber phase modulator includes fiber core, optical fiber cladding, two micro-pores, and tungsten filament. There is one air gap between the tungsten filament and the optical fiber cladding. The method is convenient, has low cost. The phase modulator adopts full optical fiber structure which has low modulating voltage and little insertion loss.

Description

technical field [0001] The invention relates to a phase adjuster for optical signals and a preparation method thereof, in particular to a preparation method and a product of a dual-hole polarization optical fiber phase adjuster, belonging to the field of optical information technology. Background technique [0002] The all-fiber phase modulator has a wide range of applications in the fields of optical communication and sensing, especially it can be used to realize the phase modulation function required by the closed-loop all-fiber interferometric fiber optic gyroscope (I-FOG). Since there is no all-fiber phase modulation element with excellent linearity, bandwidth and loss characteristics, the realization and application of closed-loop all-fiber I-FOG are limited. The dual-hole polarized fiber optic phase modulator has the characteristics of low driving voltage, large bandwidth, and low loss, which just solves the above problems. [0003] The material constituting the optic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/01G02B6/02
Inventor 伍刚王子宇
Owner PEKING UNIV
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