Packaging assembly for high-speed vertical-cavity surface-emitting laser
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United States of America Patent
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Jun 25, 2019
Grant Date -
Mar 14, 2019
app pub date -
Oct 10, 2017
filing date -
Sep 8, 2017
priority date (Note) -
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Abstract
A packaging assembly for a high-speed vertical-cavity surface-emitting laser (VCSEL) mainly applies a lens assembly consisted of several prisms to split a laser beam emitted by a VCSEL element so as to guide a small portion of the laser beam back to a monitor photodiode (MPD) and the rest of the laser beam to travel away along an optical axis. Such a spectacular design of the lens assembly can not only relieve the VCSEL element from a position right under the optical axis, but can also reduce signal loss by shorting a length of a bonding wire for a corresponding pin through disposing the VCSEL element further close to the corresponding pin. Thereupon, a defect of lights reflected from a lens or a translucent plate on a cap can be substantially improved.
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