Methods and apparatuses using optics with aperture for passing optical signals between input and output stages

摘要

Aspects of the present disclosure are directed to processing optical signals. As may be implemented in accordance with one or more embodiments, an aperture receives a plurality of optical signals and passes the signals to one or more optical processing stages. Each stage includes a plurality of optical detectors and an optical element that operates with the aperture to provide optical signals from inputs of the stage to at least one of an output of the stage and respective ones of the plurality of optical detectors.

主权项

1. An apparatus comprising:
an optical element; an aperture configured and arranged in the optical element to receive a plurality of optical signals; and at least one optical processing stage having inputs coupled to receive the plurality of optical signals as passed via the aperture, each stage including:
a plurality of optical detectors; andthe optical element which is configured and arranged with the aperture to provide optical signals from inputs of the stage to at least one of an output and respective ones of the plurality of optical detectors; and wherein the at least one optical processing stage includes first and second ones of the optical processing stages, and the optical element in the first stage is configured and arranged with the aperture to provide the optical signals to the second stage, via the output.