Retro-reflective multi-port filter device with triple-fiber ferrule
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United States of America Patent
Stats
-
Mar 18, 2003
Grant Date -
Nov 29, 2001
app pub date -
Mar 26, 2001
filing date -
Feb 22, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A retro-reflective multi-port fiber optic device includes the triple-fiber ferrule with a GRIN rod lens to couple the light. The triple-fiber ferrule with three fibers thereof is attached to the angled facet of the GRIN rod lens and the WDM filter is attached to the opposite side of the lens. A reflective mirror is aligned with and attached next to the other side of the WDM filter opposite to the lens. The triple-fiber ferrule, which is specifically selected from adense series of triple-fiber ferrules respectively defining three-fiber assemblies with different fiber spacings, is used to couple light in and out of the device, and tune the filter center wavelength to the desired ITU grid.
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