US 11,656,408 B2
Optical assembly
Rui Manuel Lemos Alvares Dos Santos, Eindhoven (NL)
Assigned to Photon IP B.V., Eindhoven (NL)
Appl. No. 17/924,576
Filed by Photon IP B.V., Eindhoven (NL)
PCT Filed Sep. 27, 2021, PCT No. PCT/NL2021/050580
§ 371(c)(1), (2) Date Nov. 10, 2022,
PCT Pub. No. WO2022/066016, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 2026563 (NL), filed on Sep. 28, 2020.
Prior Publication US 2023/0119823 A1, Apr. 20, 2023
Int. Cl. G02B 6/12 (2006.01); G02B 6/26 (2006.01); G02B 6/42 (2006.01); G02B 6/30 (2006.01); G02B 6/122 (2006.01); G02B 6/125 (2006.01); G02B 6/136 (2006.01)
CPC G02B 6/1228 (2013.01) [G02B 6/125 (2013.01); G02B 6/136 (2013.01); G02B 2006/12061 (2013.01); G02B 2006/12176 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical assembly, comprising:
a first optical circuit, comprising:
a first optical substrate;
at least one first optical waveguide formed in the first optical substrate; and
a first tapered recess in the first optical substrate arranged near a first end of a first optical waveguide among the at least one first optical waveguide, said first tapered recess having a bottom surface, an end surface, and a pair of side surfaces extending from the bottom surface; and
a second optical circuit configured to be fixedly coupled to the first optical circuit and comprising:
a second optical substrate;
at least one second optical waveguide formed in the second optical substrate; and
a first recess underneath a first end of a second optical waveguide among the at least one second optical waveguide, wherein said first end of a second optical waveguide forms a first flexible end;
wherein the first optical circuit further comprises a second tapered recess arranged near a second end of a first optical waveguide among the at least one first optical waveguide, said second tapered recess having a bottom surface, an end surface, and a pair of side surfaces extending from the bottom surface, and in that the second optical circuit further comprises a second recess underneath a second end of a second optical waveguide among the at least one second optical waveguide,
wherein said second end of a second optical waveguide forms a second flexible end, respectively, wherein the first and second flexible end extend away from the second optical substrate along at least partially opposite directions in absence of external forces acting thereon,
wherein said first and second flexible end are configured to be received in the first and second tapered recess, respectively, for the purpose of allowing the first and second flexible end to exert a spring force onto the end surface of the first and second tapered recess, respectively, when fixedly coupling the first and second optical circuit,
wherein, when the first and second optical circuit are fixedly connected, the first optical waveguide having the first tapered recess arranged near its first end is optically coupled via the end surface of the first tapered recess to the second optical waveguide having the first recess arranged near its first end and the first optical waveguide having the second tapered recess arranged near its second end is optically coupled via the end surface of the second tapered recess to the second optical waveguide having the second recess arranged near its second end, and
wherein the first optical circuit is one among an optically active circuit and an optically passive circuit and wherein the second optical circuit is the other among the optically active circuit and an optically passive circuit.