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Multifunctional integrated optical modulator and production method thereof

An integrated optical and multi-functional technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of low signal-to-noise ratio, light wave loss, etc., to improve the signal-to-noise ratio, wide wavelength-dependent bandwidth, and wide operating wavelength range. Effect

Active Publication Date: 2012-11-14
北京浦丹光电股份有限公司
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  • Application Information

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide an integrated optical multifunctional modulator and its manufacturing method that overcomes the defects of low signal-to-noise ratio, extra 50% optical wave loss and wavelength bandwidth in the existing technical solutions

Method used

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  • Multifunctional integrated optical modulator and production method thereof
  • Multifunctional integrated optical modulator and production method thereof
  • Multifunctional integrated optical modulator and production method thereof

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Embodiment Construction

[0048] image 3 Shown is embodiment 1 of the present invention, the integrated optical multifunctional modulator of the present invention is made of crystal substrate 1, Y-shaped waveguide 2, diagonal arm waveguide 3 and waveguide electrode 4; On crystal substrate 1, Y Y-shaped waveguide 2 and oblique arm waveguide 3, the three branches of Y-shaped waveguide 2 are straight arm waveguide 5, branch A6 and branch B7 respectively, oblique arm waveguide 3 and straight arm waveguide 5 are on the same side, oblique arm waveguide 3 The end is close to the intersection point of the Y-shaped waveguide 2 in a curved shape, and the Y-shaped waveguide 2 and the diagonal arm waveguide 3 together form an integrated coupler 8, see Figure 4 ; On the crystal substrate 1, a waveguide electrode 4 is formed, and the waveguide electrode 4 causes the transmitted light wave to generate a phase difference through the electro-optic effect or thermo-optic effect, thereby forming a Mach-Zehnder interfer...

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Abstract

The invention relates to an optical element for the field of optical fiber sensing or optical fiber communication, in particular to a multifunctional integrated optical modulator for integrating a coupler of an inclined passing arm in a single Y-shaped waveguide as well as a production method of the modulator. The multifunctional integrated optical modulator comprises a crystal substrate, a Y-shaped waveguide, an inclined passing arm waveguide and a waveguide electrode, wherein the Y-shaped waveguide and the inclined passing arm waveguide form an integrated coupler with a special structure. With the structure, the multifunctional integrated optical modulator can solve the problems of not high signal-noise ratio and extra 3dB which is 50 percent of light wave loss, wide wavelength band andthe like in the prior art. In addition, the invention has the advantages of insensitive temperature, wide wavelength band, larger tolerance of production process and the like.

Description

technical field [0001] The invention relates to a component used in the field of optical fiber sensing or optical fiber communication, in particular to an integrated optical multifunctional modulator using a coupler integrating a diagonal arm waveguide in a single Y-shaped waveguide, and the modulator manufacturing method. Background technique [0002] Optical modulators are often used in the field of optical fiber sensing or optical fiber communication. For the application of fiber optic gyro sensors, the optical path of optical modulators currently uses a single Y-shaped waveguide structure. A 2×2 fiber optic coupler is set at the input end of the Y-shaped waveguide structure to realize the function of separating input and output, see figure 1 ; The optical path of the optical modulator also often adopts a double Y-shaped waveguide structure, the second Y-shaped waveguide structure is used for power splitting, and the first Y-shaped waveguide structure is coupled with the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/035G02F1/01
Inventor 薛挺向美华耿凡
Owner 北京浦丹光电股份有限公司
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