Monitor photodiode (MPD) submount for vertical mounting and alignment of monitoring photodiodes

A multi-channel optical transceiver, the multi-channel optical transceiver comprising:

• a transceiver substrate that extends from a first end to a second end, the transceiver substrate including at least a first mounting surface having a plurality of transmitter optical subassembly (TOSA) connector pads disposed proximate the first end for electrically coupling with a TOSA arrangement;
• a TOSA arrangement for outputting a plurality of channel wavelengths, the TOSA arrangement being coupled to the first end of the transceiver substrate;
• a plurality of MPD modules disposed on the first mounting surface of the transceiver substrate to monitor optical power of the TOSA arrangement, each of the plurality of MPD modules comprising:
• a base formed by a plurality of sidewalls, wherein at least one sidewall of the plurality of sidewalls provides a mounting surface coupled to couple to an MPD, and at least one sidewall provides a mating surface coupled to the first mounting surface of the transceiver substrate;
• 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, and the first conductive trace transitions to the second conductive trace, the second conductive trace extending substantially transverse relative to the mounting surface of the base and substantially parallel relative to the mounting surface of the substrate.