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Multi-channel dynamic optical dispersion compensator

A dispersion compensator and multi-channel technology, which is applied in the coupling of optical waveguide, electrical components, electromagnetic wave transmission system, etc., can solve the problems of increasing device volume and cost, reduce the difficulty of debugging, improve stability, and increase high stability Effect

Inactive Publication Date: 2012-07-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Inserting an optical circulator into the dispersion compensator not only generat

Method used

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  • Multi-channel dynamic optical dispersion compensator
  • Multi-channel dynamic optical dispersion compensator

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Embodiment Construction

[0028] Such as figure 1 As shown, the multi-channel dynamic optical dispersion compensator of the present invention includes a double fiber collimator 3, a roof prism 4, a polarization conversion assembly 5, a prism pair 6, a Fourier lens 7, a transmissive phase grating 8, a mirror 9 and Liquid crystal on silicon chip 10. The phase grating 8 and the liquid crystal on silicon chip 10 are respectively located on the front and rear focal planes of the Fourier lens 7, forming a 2f system. The 2f system refers to the optical system in which the object image is located on the front and rear focal planes of the lens.

[0029] For the convenience of further illustrating the working principle of the device of the present invention, the meridian plane and the sagittal plane are first defined here. figure 1 In , the paper plane is the meridian plane, and the vertical plane perpendicular to the paper plane is the sagittal plane. therefore, figure 2 The light path in is located in the...

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Abstract

The invention provides a multi-channel dynamic optical dispersion compensator which comprises a double-fiber collimator, a roof prism, a polarized switching assembly, a prism pair, a Fourier lens, a transmission type phase grating, a reflecting mirror and a silicon-based liquid crystal chip, wherein the transmission type phase grating and the silicon-based liquid crystal chip are respectively positioned on a front focal plane and a rear focal plane of the Fourier lens to form a 2f system; and two tail fibers of the double-fiber collimator are respectively used as an input end and an output end of the multi-channel dynamic optical dispersion compensator. According to the multi-channel dynamic optical dispersion compensator disclosed by the invention, an optical circulator adopted in the prior technical scheme can be omitted; and the multi-channel dynamic optical dispersion compensator has the characteristics of low loss, small size and low cost.

Description

technical field [0001] The invention relates to an optical device applied in the field of optical fiber communication, in particular to a multi-channel dynamic optical dispersion compensator. Background technique [0002] In order to meet the growth of people's demand for information, the transmission rate of optical fiber communication system is increasing day by day, dispersion has become the main factor restricting the further improvement of communication rate, and with the Reconfigurable Optical Add-drop Multiplexer , referred to as ROADM) and Optical Cross-connect (Optical Cross-connect, referred to as OXC) and other dynamic optical switching equipment are widely used. Optical fiber communication is developing from point-to-point transmission system to intelligent dynamic all-optical network. Optical fiber link becomes Complicated and dynamically changing, it is necessary to independently and dynamically compensate the optical dispersion in each channel of the DWDM opti...

Claims

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Application Information

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IPC IPC(8): G02B6/34H04B10/18H04B10/2525
Inventor 万助军莫槟诚钟瑞刘德明
Owner HUAZHONG UNIV OF SCI & TECH
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