US 11,057,112 B1
Monitor photodiode (MPD) submount for vertical mounting and alignment of monitoring photodiodes
Kai-Sheng Lin, Sugar Land, TX (US); Hao-Chiang Cheng, Houston, TX (US); and Hang Xie, Missouri City, TX (US)
Assigned to Applied Optoelectronics, Inc., Sugar Land, TX (US)
Filed by Applied Optoelectronics, Inc., Sugar Land, TX (US)
Filed on Jan. 8, 2020, as Appl. No. 16/737,414.
Int. Cl. H04B 10/00 (2013.01); H04B 10/40 (2013.01); H04B 10/50 (2013.01); H04B 10/67 (2013.01); G02B 6/42 (2006.01); H01S 5/026 (2006.01); H04B 10/69 (2013.01)
CPC H04B 10/40 (2013.01) [G02B 6/428 (2013.01); G02B 6/4215 (2013.01); G02B 6/4245 (2013.01); G02B 6/4256 (2013.01); H01S 5/0264 (2013.01); H04B 10/503 (2013.01); H04B 10/506 (2013.01); H04B 10/67 (2013.01); H04B 10/69 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A monitor photodiode (MPD) submount for coupling to and aligning a MPD with an associated laser diode in an optical transceiver or transmitter module, the MPD submount comprising:
a base formed by a plurality of sidewalls, wherein at least one sidewall of the plurality of sidewalls provides a mounting surface for coupling to the MPD, and at least one sidewall provides a mating surface for coupling to a mounting surface of a substrate, the mounting surface of the base extending substantially transverse relative to the mating surface;
at least first and second conductive traces disposed on the base that collectively define a first conductive path, and third and fourth conductive traces disposed on the base that collectively define a second conductive path; and
wherein the first conductive trace is disposed on the mounting surface of the base and is configured to electrically couple to the MPD, and wherein the first conductive trace extends towards the mounting surface of the substrate when the MPD submount is coupled thereto, and the first conductive trace transitions to the second conductive trace, and wherein the second conductive trace extends substantially transverse relative to the mounting surface of the base and substantially parallel relative to the mounting surface of the substrate.