US 12,306,437 B2
Temperature-stabilized integrated waveguides
Subal Sahni, La Jolla, CA (US); Kamal V. Karimanal, San Jose, CA (US); Gianlorenzo Masini, Carlsbad, CA (US); Attila Mekis, Carlsbad, CA (US); and Roman Bruck, Vienna (AT)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Nov. 10, 2023, as Appl. No. 18/506,724.
Application 18/506,724 is a continuation of application No. 17/081,852, filed on Oct. 27, 2020, granted, now 11,860,412.
Prior Publication US 2024/0077672 A1, Mar. 7, 2024
Int. Cl. G02B 6/122 (2006.01); G02B 6/12 (2006.01)
CPC G02B 6/1225 (2013.01) [G02B 6/12014 (2013.01); G02B 2006/12061 (2013.01); G02B 2006/12107 (2013.01); G02B 2006/12135 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integrated photonic device comprising:
a first layer comprising a waveguide comprising a refractive index, wherein the refractive index changes according to a thermo-optic effect as a temperature of the integrated photonic device fluctuates, and wherein the waveguide comprises a ridge protruding in a first direction from a base of the waveguide, wherein the ridge is disposed between the base of the waveguide and a compensation structure; and
a second layer comprising the compensation structure, wherein the first layer is spaced apart from the second layer by a first distance, wherein the compensation structure applies a compensation stress on the waveguide as the temperature of the integrated photonic device fluctuates, wherein the compensation stress alters the thermo-optic effect on the refractive index of the waveguide.