Optical waveguides – With disengagable mechanical connector – Optical fiber/optical fiber cable termination structure
Reexamination Certificate
2005-02-15
2005-02-15
Healy, Brian M. (Department: 2883)
Optical waveguides
With disengagable mechanical connector
Optical fiber/optical fiber cable termination structure
C385S031000, C385S033000, C385S034000, C385S052000, C385S024000, C385S073000, C385S074000, C398S082000, C398S085000, C398S088000
Reexamination Certificate
active
06854900
ABSTRACT:
A method of fabricating a WDM unit consists of attaching a first and a second GRIN lenses to opposite faces of a WDM filter. A dual fiber pigtail and a single fiber pigtail are mounted in corresponding glass tubes. The glass tube with the dual fiber pigtail and the glass tube with the single fiber pigtail are mounted on the second GRIN lens and the first GRIN lens respectively. The position of the dual fiber pigtail and the single fiber pigtail are adjusted with respect to the second GRIN lens and the first GRIN lens respectively to obtain the best optical property. The invention prevents the WDM filter from tilting during temperature variation by sandwiching the WDM filter in between the two GRIN lenses, and further prevents the WDM unit from increasing the reflection loss and insertion loss.
REFERENCES:
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patent: 6282339 (2001-08-01), Zheng
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patent: 6582135 (2003-06-01), Brun et al.
Chien Pie-Yau
Lai I-Jen
Lee Yu-Ting
Lin Chih-Hsien
Tsai Tsung-Yueh
Asia Optical Co. Inc.
Healy Brian M.
Rabin & Berdo P.C.
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