Joyce L Li

US Patent:

20140341578, Nov 20, 2014

Filed:

Nov 25, 2013

Appl. No.:

14/088883

Inventors:

- Sugar Land TX, US
Luohan Peng - Cypress TX, US
Joyce Li - Houston TX, US

Assignee:

Applied Optoelectronics, Inc. - Sugar Land TX

International Classification:

H04J 14/02
H04B 10/60

US Classification:

398 68

Abstract:

A multi-channel receiver optical subassembly (ROSA) such as an arrayed waveguide grating (AWG), with outputs directly optically coupled to respective photodetectors such as photodiodes. In one embodiment, an AWG may be configured such that optical components of the AWG do not interfere with direct optical coupling, and the wire bonding points on the photodiodes may also be configured such that wire bonding does not interfere with direct optical coupling. The photodetectors may also be mounted on a photodetector mounting bar with a pitch sufficiently spaced to allow connection to floating grounds. A passive alignment technique may be used to determine the mounting locations on the photodetector mounting bar such that the photodetectors are aligned with the optical outputs.