Optical waveguides – With optical coupler – Plural
Reexamination Certificate
2006-02-14
2006-02-14
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
With optical coupler
Plural
C385S015000, C385S031000
Reexamination Certificate
active
06999653
ABSTRACT:
The present invention relates to a 4-port wavelength selective router and the add/drop multiplexer using the above router. More particularly, it relates to a 4-port wavelength selective router that can effectively routes counter-propagating signals while suppressing multiple reflections generated in the bidirectional transmission systems and networks.
REFERENCES:
patent: 5706375 (1998-01-01), Mihailov et al.
patent: 5875272 (1999-02-01), Kewitsch et al.
patent: 6061484 (2000-05-01), Jones et al.
patent: 6567194 (2003-05-01), Badr
patent: 2358305 (2001-07-01), None
patent: 07212316 (1995-08-01), None
Hee Cho Yun
Hun Shin Jeong
Kim Hyun Deok
Lee Chang Hee
Oh Tae Won
Bacon & Thomas PLLC
Connelly-Cushwa Michelle R.
Korea Advanced Institute of Science & Technology
Ullah Akm Enayet
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