Apparatuses for reducing the sensitivity of an optical signal to polarization and methods of making and using the same

摘要

Methods and apparatuses for reducing the sensitivity of an optical signal to polarization. The method generally includes (i) reflecting the optical signal from a first mirror at a first angle relative to the optical signal to a second mirror at a second angle, and (ii) further reflecting the reflected optical signal from the second mirror to a receiver. The apparatus generally comprises (i) a first mirror at a first angle relative to an incident optical signal and configured to reflect the incident optical signal, (ii) a second mirror at a second angle configured to further reflect the reflected optical signal to a first receiver, and (iii) a lens configured to focus and/or collimate the optical signal or the reflected optical signal. The first angle is configured to reduce polarization of the reflected optical signal, thereby maximizing the intensity or power of the optical signal.

主权项

1. A multi-channel optical signal assembly, comprising:
a first filter at a first angle relative to an incident optical signal and configured to reflect light in the incident optical signal having a first wavelength, provide a first reflected optical signal, and allow light in the incident optical signal having at least a second wavelength to pass through the first filter, wherein the first angle is 13°±3°; a first mirror at a second angle relative to the first reflected optical signal and configured to further reflect the first reflected optical signal and provide a second reflected optical signal; a first lens configured to focus and/or collimate the second reflected optical signal and provide a focused optical signal; a first receiver coupled to the first lens and configured to receive the focused optical signal; a second filter configured to receive the light in the incident optical signal having at least the second wavelength and reflect a portion of the light in the incident optical signal having the second wavelength at a same first angle as the first filter; a second mirror configured to further reflect the reflected portion of the light in the incident optical signal having the second wavelength at a same second angle as the first mirror to a second receiver; a second lens configured to focus and/or collimate the further reflected portion of the light in the incident optical signal having the second wavelength; and a second receiver coupled to the second lens and configured to receive the focused and/or collimated further reflected portion of the light in the incident optical signal.