MULTI-CHANNEL TRANSMITTER OPTICAL SUBASSEMBLY (TOSA) WITH OPPOSING PLACEMENT OF TRANSISTOR OUTLINE (TO) CAN LASER PACKAGES
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United States of America Patent
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Issued Date -
Mar 2, 2017
app pub date -
Aug 27, 2015
filing date -
Aug 27, 2015
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Abstract
A multi-channel transmitter optical subassembly (TOSA) including staggered transistor outline (TO) can laser package placement to provide enhanced coupling and optical power is disclosed, and may be used in an optical transceiver for transmitting an optical signal. The TOSA comprises a housing that includes plurality of sidewall openings with each sidewall opening configured to couple to a TO can laser package to provide coarse wavelength division multiplexing. The housing includes at least first and second sidewall openings on a first sidewall, and a third sidewall opening disposed on a sidewall opposing the first sidewall and being positioned at generally a mid-point between the first and second sidewall openings. This staggered and opposing sidewall opening arrangement allows an increased distance between adjacent sidewall openings, and thus, the TOSA may increase optical power and yield by providing additional space for performing post-attachment alignment of TO can laser packages.
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