US 11,880,067 B2
Integrated environmentally insensitive modulator for interferometric gyroscopes
Jeffrey Earl Lewis, Phoenix, AZ (US); Matthew Wade Puckett, Phoenix, AZ (US); Neil A. Krueger, Saint Paul, MN (US); and Chellappan Narayanan, Phoenix, AZ (US)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Apr. 4, 2022, as Appl. No. 17/712,917.
Application 17/712,917 is a continuation of application No. 16/869,425, filed on May 7, 2020, granted, now 11,294,120.
Prior Publication US 2022/0229231 A1, Jul. 21, 2022
Int. Cl. G02B 6/125 (2006.01); G02B 6/126 (2006.01); G01C 19/72 (2006.01); G02B 6/12 (2006.01)
CPC G02B 6/125 (2013.01) [G01C 19/721 (2013.01); G02B 6/12004 (2013.01); G02B 6/126 (2013.01); G02B 2006/1204 (2013.01); G02B 2006/12147 (2013.01); G02B 2006/12159 (2013.01); G02B 2006/12176 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integrated optical circuit, comprising:
a first substrate formed of a first material;
a first waveguide formed of a second material and positioned on the first substrate, wherein the first waveguide is configured to polarize light beams that propagate through the first waveguide, wherein the first waveguide is configured to split a light beam input into the first waveguide into multiple light beams;
a second substrate formed of a third material, wherein the second substrate is coupled to or positioned on the first substrate; and
a plurality of phase modulators positioned on or in the second substrate, wherein each respective phase modulator of the plurality of phase modulators is optically coupled to a respective branch of the first waveguide, wherein each respective phase modulator of the plurality of phase modulators is configured to modulate a phase of light beams that propagate through the respective phase modulator.