Patent ID: 9749054
Date: 2017-08-29
CPC Classifications: G02B,G02F,H01L,H04B

Claim:
1. An optical transceiver device (OTD), comprising: a) a detection region for detecting light at a first wavelength for down-conversion, the light at the first wavelength being incident onto the detection region; b) a modulation region for modulating light at a second wavelength longer than the first wavelength to obtain modulated second wavelength light, wherein the detection region is substantially transparent to the light at the second wavelength and located upstream to the modulation region with respect to a direction of propagation of the light at the first wavelength light incident onto the detection region; and c) a reflecting layer for reflecting the modulated second wavelength light for up-conversion, wherein the reflecting layer is partially transparent and overlays a waveguide layer so that a portion of the modulated second wavelength light is reflected and another portion of the modulated second wavelength light is coupled into the waveguide layer.