AWG router for achieving even frequency spectrum through cascading of filters and input channels

Abstract

The invention discloses an AWG router for achieving an even frequency spectrum through cascading of filters and input channels. The free spectrum range is larger than 2*N times of a channel wavelengthinterval of an array waveguide grating, the array waveguide grating is provided with 2N-1 input and output channels, and a central input port of the array waveguide grating is connected with a filterinput waveguide through an AWG input waveguide; in the other input ports, the nth input port and the (N+n)th input port form a set of input ports and connected to the output end of the same fiber through respective AWG input waveguides separately, and the input ends of the N-1 filters are connected with other N-1 filter input waveguides respectively. According to the AWG router, the output frequency spectrum insertion loss of the array waveguide grating router is even, the insertion loss difference of all the output channels can be effectively reduced, and the severe output wavelength frequency deviation is effectively reduced, wherein due to the fact that the conditions that the free spectrum range requirement is met and the diffraction level is an integer cannot be achieved at the sametime, the severe output wavelength frequency deviation is caused. The AWG router has the advantages of being easy to manufacture, low in cost and the like.

Description

technical field [0001] The invention relates to an arrayed waveguide grating (AWG) optical wavelength router, in particular to an AWG router in which a filter and an input channel are cascaded to realize uniform frequency spectrum. Background technique [0002] As the minimum feature size of the semiconductor process continues to decrease according to Moore's Law, the chip integration level is getting higher and higher, and the data exchange speed between each transistor will not be able to keep up with its own data processing speed. The electrical interconnection technology based on metal conduction is becoming Facing an insurmountable "electronic bottleneck". Compared with electrical interconnection, optical interconnection (Optical Interconnection) uses photons as the information carrier, and has the advantages of ultra-high bandwidth, ultra-fast transmission rate, anti-electromagnetic interference and low energy consumption, which will trigger a new round of revolution i...

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Problems solved by technology

[0008] In view of the deficiencies in the background technology, the purpose of the present invention is to propose an AWG router in which a filter and an input channel are cascaded to achieve a uniform spectrum, and an additional filter and an input channel are connected on the basis of an arrayed waveguide grating (AWG) to solve the problem of traditional arrayed waveguide The problem of large differences in spectral insertion loss of grating optical wavelength routers, to achieve uniform spectral loss

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