Patent ID: 9658396
Date: 2017-05-23
CPC Classifications: G02B

Claim:
1. A device comprising: a first horizontal waveguide made from a material having a refractive index in a range of 1.45 to 3.45, said material being other than silicon, wherein the first horizontal waveguide includes a first end angled to reflect light nearly vertical by total internal reflection between the first horizontal waveguide and another medium, a second end to receive the light for reflection, and a third end to output the reflected light, the first horizontal waveguide having a first tapered region to compress light, wherein the first horizontal waveguide comprises a non tapered region that extends from the second end to the first tapered region, the non tapered region positioned at a same horizontal plane along a direction of propagation of the light through the first horizontal waveguide as the first tapered region, the non tapered region positioned to receive the light at the second end; a second horizontal waveguide coupled to the second end of the first horizontal waveguide, the second horizontal waveguide to receive light for the first horizontal waveguide before the first waveguide, the second horizontal waveguide having a second tapered region to compress light, the first tapered region extending closer to the first end of the first horizontal waveguide than the second horizontal waveguide.