Free space multi-path wavelength division multiplexing device and method

Abstract

The invention discloses a free space multipath wavelength division multiplexing device and method. The device comprises an unfilled corner bottom plate, an input collimator vertically arranged on an unfilled corner bevel edge of the bottom plate, a plurality of output collimators respectively arranged on the bottom plate, and a large-angle optical filter arranged on the central axis of the output collimators; wedge angle pieces are arranged between the optical filters and the corresponding output collimators; the plurality of output collimators are arranged on one side of the bottom plate at equal intervals in parallel to form a first output collimator assembly; and the plurality of output collimators are arranged at equal intervals, in parallel and at intervals on the opposite sides of the first output collimator assembly on the bottom plate to form a second output collimator assembly. According to the invention, the multi-path wavelength division multiplexer in a free space is formed by using a reflection principle and a refraction principle of the wedge angle sheet, so that the problems of high equipment debugging cost, incapability of realizing automation and inconvenience in batch production caused by using a large-angle optical filter scheme in order to achieve miniaturized wavelength division multiplexing are solved.

Description

technical field [0001] Embodiments of the present invention belong to the technical field of optical communication devices, and more specifically, relate to a free space multiplex wavelength division multiplexing device and method. Background technique [0002] Coarse Wavelength Division Multiplexer (CWDM), also known as coarse wavelength division multiplexing, is a wavelength division multiplexing method of optical fiber metropolitan area network. Many, and the requirements for optical channel power are not high. The most important advantage of CWDM is low equipment cost, and another advantage of CWDM is that it can reduce the operating cost of the network. Due to the small size, low power consumption, easy maintenance and convenient power supply of CWDM equipment, 220V AC power supply can be used. [0003] As an effective solution to increase the bandwidth capacity, the wavelength division multiplexing technology widely uses the dielectric diaphragm solution. In order t...

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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a free-space multiplex wavelength division multiplexing device, by vertically setting an input collimator on the hypotenuse of the missing corner of the base plate, equidistant on one side of the base plate A plurality of output collimators are arranged in parallel and at intervals to form a first output collimator assembly, and a plurality of the output collimators are arranged equidistantly, parallel, and at intervals on opposite sides of the first output collimator assembly on the base plate The output collimator forms the second output collimator assembly; a large-angle optical filter is arranged at the input end of each output collimator, and a wedge angle sheet is arranged between the large-angle optical filter and the output collimator; through a The input collimator, multiple large-angle filters arranged at equidistant intervals, multiple wedge angle plates corresponding to the large angle filter plates, and multiple output collimators corresponding to the wedge angle plates, use reflection The principle and the refraction principle of the angle wedge form a free-space multiplex wavelength division multiplexer; the invention has the advantages of simple structure, convenient installation, small space occupation, universal equipment and fixtures, and can not only realize multi-channel automatic debugging, but also meet Automated CWDM for fast line change production requirements; solves the problem of large angle of transmitted light caused by the use of large-angle optical filters in order to realize miniaturized wavelength division multiplexing, which exceeds the angle range of normal optical path debugging, and the angle and stroke specifications of the work clamp are difficult to meet the requirements , which greatly increases the cost of equipment debugging, and the operation difficulty of employees is difficult to realize automatic debugging, which is not conducive to mass production

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