Ultra compact free-space multiplexer/demultiplexer

摘要

An apparatus for multiplexing and demultiplexing comprises: a substrate having a first surface and a second surface, where the second surface is opposite to the first surface; a first fiber array unit disposed on the first surface of the substrate and a second fiber array unit disposed on the second surface of the substrate, where a plurality of fibers in a fiber array unit are arranged in an array on a chip; a first microlens array disposed on the first surface of the substrate and a second microlens array disposed on the second surface of the substrate; a plurality of thin film filters disposed on the first and second surface of the substrate, where each thin film filter transmits light having a different wavelength band; a fiber collimator disposed on the first surface of the substrate; a turning prism disposed at an edge of the substrate for turning light from the first surface to the second surface of the substrate or also turning light from the second surface to the first surface of the substrate.

主权项

1. An apparatus for multiplexing and demultiplexing comprising:
a substrate having a first surface and a second surface, wherein the second surface is opposite to the first surface; a first fiber array unit disposed on the first surface of the substrate, wherein a plurality of fibers in the first fiber array unit are arranged in an array on a chip; a first micro lens array disposed on the first surface of the substrate; a plurality of thin film filters disposed on the first surface of the substrate, wherein each thin film filter transmits light having a different wavelength band; wherein light transmitted by a thin film filter is focused by a microlens of the first micro lens array onto a first fiber of the first fiber array unit; wherein the first fiber of the first fiber array unit forms a channel port; and a plurality of mirrors, wherein each mirror reflects light coming from a first thin film filter toward a second thin film filter.