OPTICAL MODULE HAVING ENHANCED OPTICAL COUPLING EFFICIENCY BETWEEN LASER DIODE AND OPTICAL FIBER
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United States of America Patent
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Issued Date -
Nov 7, 2013
app pub date -
Feb 7, 2012
filing date -
Feb 10, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An optical module to emit light is disclosed where the optical module enhances the coupling efficiency between an LD and the optical fiber without increasing complexity in the optical alignment. The optical module includes a first aspheric lens and a second aspheric lens, where the first lens is implemented with a cap of the module; while, the second lens is supported in the holder on the cap. The holder may align with the cap. The lens system of the optical module shows the magnification of about 4 to 7, and the NA in a side of the optical fiber is equal to or greater than 0.13, while, that in the opposite side is equal to or greater than 0.65.
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