Patent ID: 8750712

Claim:
A multi-channel optoelectronic device comprising: a substrate; one or more optical waveguides on the substrate; one or more electrical traces on the substrate; two or more optoelectronic components on the substrate; and a protective encapsulant arranged to encapsulate the optoelectronic components, at least portions of the one or more optical waveguides, and at least portions of the one or more electrical traces, wherein: each optoelectronic component comprises: (a) a photodetector arranged (i) to receive via at least one of the one or more optical waveguides a corresponding input optical signal modulated to encode corresponding transmitted information and (ii) to generate in response to the corresponding input optical signal and to transmit via at least one of the one or more electrical traces a corresponding output electrical signal modulated to encode the corresponding transmitted information; or (b) a light source arranged (i) to receive via at least one of the one or more electrical traces a corresponding input electrical signal modulated to encode corresponding transmitted information and (ii) to generate in response to the corresponding input electrical signal and to transmit via at least one of the one or more optical waveguides a corresponding output optical signal modulated to encode the corresponding transmitted information; the encapsulant includes hollow dielectric microspheres dispersed within its volume so as to reduce a cross-talk penalty arising from unwanted electrical signals present in the encapsulant to a level below that exhibited by the multi-channel device without the microspheres in the encapsulant; and the encapsulant further includes an optical absorber dispersed within its volume so as to reduce a cross-talk penalty arising from unwanted optical signals present in the encapsulant to a level below that exhibited by the optoelectronic device without the optical absorber in the encapsulant.