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Optical device

A technology of optical devices and optical components, which is applied in the direction of optics, optical components, light guides, etc., and can solve the problems of deterioration of transmission characteristics of optical devices

Active Publication Date: 2013-07-10
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the transmission characteristics of the optical device deteriorate

Method used

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Embodiment Construction

[0017] Hereinafter, modes for implementing the present invention will be described in detail with reference to the drawings. In addition, in description of drawings, the same code|symbol is attached|subjected to the same element, and repeated description is abbreviate|omitted.

[0018] figure 1 It is a configuration diagram of the optical device of the first embodiment. exist figure 1 In , for convenience of description, an xyz rectangular coordinate system is shown. The optical device 1 has a light input / output unit 10 , a transmission type diffraction grating 21 , a lens 30 , and a mirror array 40 .

[0019] The optical input / output unit 10 includes a plurality of ports arranged in the x-axis direction. Each of the plurality of ports may be used as an input port for inputting light, and may be used as an output port for outputting light. The multiple ports are respectively connected to corresponding optical fibers 12 , and have corresponding collimated lenses (collimate...

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Abstract

An optical device (1) is provided with a light input / output unit (10), a transmissive diffraction grating (21), a lens (30) and a mirror array (40). The grating in the transmissive diffraction grating (21) is formed so as to extend in the x-axis direction at a constant frequency, and the transmissive diffraction grating (21) performs wavelength division on the light inputted into the input port, and outputs the same. The transmissive diffraction grating (21) is rotatable around a prescribed axis. The transmissive diffraction grating (21) outputs light of each wavelength orthogonally from the rotation axis and in a direction according to the wavelength. The lens (30) concentrates the light of each wavelength that has been divided and outputted by the transmissive diffraction grating (21) to different positions from one another.

Description

technical field [0001] The invention relates to an optical device. Background technique [0002] Patent Document 1 discloses an optical device used as an optical multiplexer, an optical demultiplexer, a wavelength selective switch, and the like. In the optical device described in this document, the light input to the input port is wavelength-branched by a reflective diffraction grating, and the light of each wavelength is output from the reflective diffraction grating in a direction corresponding to the wavelength. The light of each wavelength output by the grating is collected at different positions by the light collecting optical system. A plurality of reflective mirrors with variable reflection directions are provided at the condensing position of the light of each wavelength condensed by the condensing optical system. Output from an output port. [0003] The light input to the optical device is, for example, multiplexed light of each wavelength in an ITU grid. Corres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/08G01J3/18G02B5/18G02B6/293G02B6/34
CPCG02B6/29311G02B6/29314G02B6/3512G02B6/356G02B6/4215G02B5/18
Inventor 盐崎学田泽英久
Owner SUMITOMO ELECTRIC IND LTD