A Reconfigurable Optical All-Pass Filter
An all-pass filter and optical technology, which is applied in the field of optical filters and microwave photons, can solve the problem that the waveguide loss cannot be ignored, and achieve the effect of increasing the working frequency range, high delay, and increasing the amount of delay
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[0029] In order to make the object of the present invention, the technical solution and advantages more clearly understood, the following in conjunction with the accompanying drawings and embodiments, the present invention will be further elaborated in detail. It should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to qualify the present invention. Further, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
[0030] See Figure 1 , the present invention provides a reconfigurable optical all-pass filter, comprising: a first coupling grating 1, a second coupled grating 9, three optical couplers, N + 2 optical phase shifters and N microcycles, N is an integer greater than or equal to 2; wherein the output of the first optical coupler 2, the input terminal of th...
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