One multiply N power splitter comprising wavelength selectivity
A technology of wavelength selectivity and power splitter, which is applied in the field of 1×N power splitter, can solve the problems of reducing device reliability, increasing device size, and increasing device cost, and achieves small size, low cost, and simple structure Effect
Inactive Publication Date: 2009-10-07
ZHEJIANG UNIV
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This not only increases the cost of the device, increases the size of the device, but also reduces the reliability of the device
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[0027] The present invention will be further described below in conjunction with accompanying drawing.
[0028] refer to figure 1 , the 1×N power splitter with wavelength selectivity of the present invention comprises an input / output coupler 5 with two input ports and two output ports, and N beam splitters distributed on the same side of the input / output coupler 5 are coupled 3 and N beam-splitting optical waveguides 4, N=6 in the illustration, each beam-splitting coupler 3 has an input terminal and two output terminals, and the two ends of the 6 beam-splitting couplers 3 connected in series are respectively connected to the input The first output end of the / output coupler 5 is connected to the first input end to form a ring cavity, and the other output end of each beam splitter coupler 3 is respectively connected to a beam splitter optical waveguide 4, and the input / output coupler 5 The second input terminal of the input / output coupler 5 is connected to the input optical wa...
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The invention discloses an one multiply N power splitter comprising wavelength selectivity, including an input optical waveguide, an output optical waveguide and an input / output coupler, N beam optical waveguides and N beam couplers. The N beam optical waveguides and N beam couplers are distributed on the same side or two sides of the input / output coupler; the input / output coupler is connected with each beam coupler in turns to compose a circular cavity. OPtical signals enters the input / output coupler through the input optical waveguide, and signals satisfies resonance condition of the circular cavity outputs from the N beam optical waveguides through N beam couplers, and signals not satisfies resonance condition of the circular cavity outputs from the output optical waveguide. The invention provided one multiply N power splitter comprising wavelength selectivity combines function of filter and power splitter, and comprises advantages of small size, simple structure and easy implementation. The invention is suitable for optical waveguides of any types without additional technics steps, and comprises advantages of simple design, simple production technics and low cost.
Description
technical field [0001] The invention relates to a 1*N power splitter, in particular to a 1*N power splitter with wavelength selectivity. Background technique [0002] In addition to the backbone network and the metropolitan area network, the fiber-to-the-home access network has gradually become an important development and construction direction of optical communication. Fiber-to-the-home (FTTH) can provide users with extremely rich bandwidth. It is an ideal access mode and the best way to solve the "last mile" for future optical fiber communication systems, and will become a symbol of a new generation of broadband networks. This puts forward new technical requirements for optical devices and opens up a new application field for them. [0003] In the fiber-to-the-home access network system, passive optical network technology (PON, passive optical network) is usually used. Among them, the filter and the 1×N power divider are the necessary basic components in the PON network...
Claims
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IPC IPC(8): G02B6/28
Inventor 戴道锌
Owner ZHEJIANG UNIV