Multichannel optical power meter using free space beam sampling

摘要

An optical device and method providing multi-channel bulk optical power monitoring is disclosed. The device and method may include a scanning mirror, a plurality of input optical fibers, a plurality of output optical fibers, and at least one sample optical fiber optically connected to a photodetector. The device and method may further include a first reflective surface and a second reflective surface. The first reflective surface may reflect light from the input optical fibers to the second reflective surface. The second reflective surface may reflect a first portion of the light into the output optical fibers and pass a second portion of the light to the scanning mirror. The scanning mirror may reflect samples of the second portion of the light into the at least one sample optical fiber.

主权项

1. An optical device providing multi-channel bulk optical power monitoring, comprising:
a fiber block securing a plurality of input optical fibers, a plurality of output optical fibers, and one or more sample optical fibers in an arrangement of rows and columns, each of the one or more sample optical fibers connected to a respective photodetector; a prism facing the fiber block, the prism comprising first, second, and third reflective surfaces; and a scanning mirror external to the prism, wherein
the first reflective surface reflects light from the input optical fibers to the second reflective surface,the second reflective surface reflects a first portion of the light from each input optical fiber into a respective one of the output optical fibers and passes a second portion of the light from each input optical fiber to the third reflective surface,the third reflective surface reflects the second portion of the light from each input optical fiber to the scanning mirror, andthe scanning mirror is configured to oscillate about a rotation axis to sequentially reflect the second portion of the light from each input optical fiber into the one or more sample optical fibers.