公开(公告)号：US09866329B2

公开(公告)日：2018-01-09

申请号：US15176382

申请日：2016-06-08

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  YongXuan Liang ,  Stella Liang Chen

IPC: H04B10/40 ,  H04B10/50 ,  H04B10/66 ,  H04B10/572 ,  H04J14/02

CPC classification number: H04B10/40 ,  G02B6/4215 ,  G02B6/4231 ,  G02B6/4256 ,  G02B6/43 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572 ,  H04B10/66 ,  H04J14/02 ,  H04J14/0256

Abstract: A multi-channel optical transmitter or transceiver includes transmitter optical subassembly (TOSA) modules optically coupled to and directly aligned with mux input ports of an optical multiplexer without using optical fibers. The optical multiplexer may include an arrayed waveguide grating (AWG) or a reversed planar lightwave circuit (PLC) splitter and may be located in a multiplexer housing having at least one side wall with input apertures aligned with the mux input ports. The TOSA modules may include a base supporting at least a laser, laser driving circuitry, and a lens for focusing the light output from the laser. Z-rings may be used to facilitate alignment and to mount the TOSA bases to the side wall of the multiplexer housing, for example, by laser welding.

公开(公告)号：US10175431B2

公开(公告)日：2019-01-08

申请号：US15242005

申请日：2016-08-19

Applicant: Applied Optoelectronics, Inc.

Inventor： Kai-Sheng Lin ,  Ziliang Cai ,  Stella Liang Chen

IPC: G02B6/12 ,  G02B6/42 ,  G02B6/293

Abstract: Techniques for reducing optical fiber bending loss in an optical transceiver are disclosed. In an embodiment, a small form-factor (SFF) optical transceiver housing includes a demultiplexer device, such as an arrayed waveguide grating (AWG) device, having a longitudinal center line that is offset laterally by a distance Doffset from the longitudinal center line of the SFF optical transceiver housing. The lateral offset distance Doffset may advantageously enable an intermediate optical fiber coupling the demultiplexer with an optical coupling receptacle, such as an LC connector, to be routed within the SFF optical transceiver housing in a manner that avoids introducing bends that are less than a minimum bending radius associated with the intermediate optical fiber cable. Thus some embodiments of the present disclosure enable greater tolerance when routing an intermediate optical fiber within housings that would otherwise introduce bending loss by virtue of their constrained dimensions.