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Wavelength selecting optical blocker

A technology of wavelength selection and blocker, which is applied in the direction of light guides, optics, instruments, etc., can solve the problems of large input and output coupling loss of optical signals and the inability to achieve power attenuation, so as to reduce the difficulty and cost of the process, simplify the complexity of circuit control, Effect of Large Wavelength Bandwidth

Active Publication Date: 2015-12-23
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its limitation is that the wavelength channel only has two states of on or off, which cannot realize the function of power attenuation, and the use of a waveguide structure leads to a large input and output coupling loss of optical signals

Method used

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  • Wavelength selecting optical blocker

Examples

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Embodiment 1

[0032]The invention relates to a dual-channel wavelength-selective optical blocker, including an optical input / output assembly, an optical polarization conversion assembly, a condensing / polarization lens assembly, a light splitting assembly, a wavelength channel control assembly, a polarized light transposition assembly, and a channel monitoring assembly , Control components. The optical input / output assembly is a group of optical fiber array or collimator array including two input ports and two output ports arranged in the first direction. The light polarization conversion component is composed of a birefringent crystal, a phase retarder and a film. The condensing / polarizing lens assembly is composed of a concave mirror or a convex lens and a reflector, which collimates and focuses the incident divergent light into parallel light, or focuses the incident parallel light into a converging light beam, and makes the light beam produce a deflection angle. The light splitting comp...

Embodiment 2

[0041] Figure 8 A schematic structural diagram presented in the second direction of the second embodiment of the wavelength selective optical blocker according to the present invention.

[0042] Compared with the first embodiment, the main difference of this embodiment is that the concave mirror 700 is replaced by the lens structure of the convex lens 705 and the reflection mirror 720 . other structures with figure 1The previous structure shown in is the same. In this embodiment, the transmission optical path of the first embodiment is similar to that of the optical path of the input signal light when the optical path is turned on, the optical path is blocked, and the signal is attenuated, so the description thereof is omitted.

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Abstract

The invention relates to a wavelength selecting optical blocker. The wavelength selecting optical blocker comprises a light polarization transformation assembly arranged between a light input / output assembly and a condensation / polarization lens assembly; a light splitting assembly arranged between the condensation / polarization lens assembly and a wavelength channel control assembly and used for spatially separating different wavelengths of incident light signals. The wavelength channel control assembly is composed of two rows of one-dimensional liquid crystal arrays, arranged on the end face of a polarization light transposing assembly and used for controlling the opening, attenuation and closing of wavelength channels; and the polarization light transposing assembly is used for making the incident polarized light deviate to a certain degree and outputting the light from each wavelength channel to set output ports. By means of a liquid crystal unit array, dual-light-path selective wavelength blocking and attenuation functions are realized.

Description

technical field [0001] The present invention relates to the technical field of reconfigurable optical wavelength add / drop multiplexing in optical communication, in particular to a wavelength selective optical blocking capable of realizing dual optical path blocking and attenuation, and having the functions of non-interfering optical wavelength signal opening / blocking and channel monitoring feedback device. Background technique [0002] Due to the increasingly widespread application of optical fiber communication in telecommunications and data networks, the demand for Internet and data communication continues to increase, resulting in continuous growth of business traffic, which puts forward higher and higher requirements for network bandwidth. In order to improve the utilization efficiency of optical fiber bandwidth and meet the application of some new converged services, such as services and wavelength-level services (such as storage area networks) provided to large custome...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/293
CPCG02B6/29302G02B6/2938
Inventor 叶小华张民苏林德.辛格
Owner BEIJING UNIV OF POSTS & TELECOMM
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