US 12,411,282 B2
Managing monolithic integration of waveguides
Antoine Bois, Quebec (CA); Raphael Beaupré-Laflamme, Quebec (CA); and Charles Baudot, Quebec (CA)
Assigned to Ciena Corporation, Hanover, MD (US)
Filed by Ciena Corporation, Hanover, MD (US)
Filed on Feb. 3, 2023, as Appl. No. 18/164,143.
Prior Publication US 2024/0264375 A1, Aug. 8, 2024
Int. Cl. G02B 6/122 (2006.01); G02B 6/13 (2006.01)
CPC G02B 6/1228 (2013.01) [G02B 6/13 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An article of manufacture comprising:
one or more sets of lower index contrast layers, each set of lower index contrast layers
comprising three or more layers, each layer formed from a corresponding material, where at least two of the corresponding materials have a different index of refraction from each other, and the corresponding materials include a first material as a core layer, a second material on top of the first material as a top cladding layer, and a third material below the first material as a bottom cladding layer, with the first material being different from the second material and different from the third material, and the first material comprising an oxide, and
being configured to provide optical confinement based at least in part on a first numerical difference between at least two different indices of refraction of the materials of that lower index contrast layer, for optical waves having a peak wavelength between about 100 nm to about 1 mm; and
one or more sets of higher index contrast layers, each set of higher index contrast layers
comprising three or more layers, each layer formed from a corresponding material, where at least two of the corresponding materials have a different index of refraction from each other, and the corresponding materials include a fourth material as a core layer, a fifth material on top of the fourth material as a top cladding layer, and a sixth material below the fourth material as a bottom cladding layer, with the fourth material being different from the fifth material and different from the sixth material, and
being configured to provide optical confinement based at least in part on a second numerical difference between the two different indices of refraction of the materials of that higher index contrast layer, for optical waves having a peak wavelength between about 100 nm to about 1 mm; and
at least one optical coupler configured to optically couple a first of the one or more sets of lower index contrast layers to a first of the one or more sets of higher index contrast layers;
wherein the first numerical difference is smaller than the second numerical difference.