Abstract: An optical system and a method of fabrication are provided. The optical system includes a substrate and at least one hole extending from a second side of the substrate towards a first side of the substrate and configured to receive at least one optical fiber. The substrate includes at least one photodetector at the first side or between the at least one hole and the first side and configured to be in an optical path of an optical signal emitted from the at least one optical fiber or transmitted through the first side to the at least one optical fiber.

Abstract: An optical system and method for coupling optical devices and an optical fiber array are provided. The optical system includes a substrate comprising a first side and a second side facing generally opposite to the first side. The optical system further includes at least one optical waveguide extending along at least a portion of the first side, at least one hole extending from the second side towards the first side, and at least one reflective element at the first side. The at least one reflective element is in optical communication with the at least one optical waveguide and with the at least one hole. The at least one reflective element is configured to deflect light between the at least one optical waveguide and the at least one hole.