Optical hybrid mixer without waveguide crossings

摘要

A multimoded interference coupler may include: first and second inputs to receive first and second optical signals such that light is not supplied through any portion of a first gap extending between the first and second inputs; first and second outputs to provide first and second components associated with the first and second optical signals, such that light is not output through any portion of a second gap extending between the first and second outputs. The first and second inputs may be separated by a first distance. The first and second outputs may be separated by the first distance. The first input and the second output may be separated by a second distance being different than a third distance separating the second input and the first output. The first and second components may have a phase difference based on a difference between the second and third distances.

主权项

1. An optical system, comprising:
a multimoded interference (MMI) coupler comprising:
a plurality of uniformly spaced inputs arranged in series along a first edge of the MMI portion, each of the plurality of uniformly spaced inputs being separated from one another by a first distance;a plurality of uniformly spaced outputs arranged in series along a second edge of the MMI portion, each of the plurality of uniformly spaced outputs being separated from one another by the first distance; a first input, of the plurality of uniformly spaced inputs, configured to receive a first optical signal;
a second input, of the plurality of uniformly spaced inputs, configured to receive a second optical signal, such that a first gap extends from the first input to the second input along the first edge, light is not supplied to the MMI coupler through any portion of the first gap;a first output, of the plurality of uniformly spaced outputs, configured to provide a first optical component associated with the first optical signal and the second optical signal; anda second output, of the plurality of uniformly spaced outputs, configured to provide a second optical component associated with the first optical signal and the second optical signal, such that a second gap extends from the first output to the second output along the second edge, light is not output from the MMI coupler through any portion of the second gap;the first input and the second input being separated by the first distance,the first output and the second output being separated by the first distance,the first input and the second output being separated by a second distance,the second input and the first output being separated by a third distance,wherein the second distance is different than the third distance,the first optical component and the second optical component having a phase difference based on a difference between the second distance and the third distance.