Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2008-04-08
2008-04-08
Font, Frank G. (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S031000, C385S024000, C385S011000, C385S014000, C385S020000, C385S016000, C385S025000, C385S026000, C385S027000, C385S028000, C385S029000, C385S030000, C359S199200
Reexamination Certificate
active
07356222
ABSTRACT:
The invention provides a wavelength selective optical device in which a light emitted from an end surface of a first optical fiber that propagates optical signals with a plurality of multiplexed wavelengths is incident on a first end surface of a first graded index rod lens, then a parallel light beam emitted from a second end surface of the first graded index rod lens is incident on an optical filter arranged to face to the second end surface of the first graded index rod lens, and then a light reflected by the optical filter is incident again on the second end surface of the first graded index rod lens so as to couple to a second optical fiber arranged on a first end surface side of the first graded index rod lens, wherein a refractive index distribution constant of the first graded index rod lens is set such that a center wavelength of the light reflected by the optical filter is positioned within a desired range.
REFERENCES:
patent: 5555330 (1996-09-01), Pan et al.
patent: 5799121 (1998-08-01), Duck et al.
patent: 5943149 (1999-08-01), Cearns et al.
patent: 6023542 (2000-02-01), Pan et al.
patent: 6084994 (2000-07-01), Li et al.
patent: 6597837 (2003-07-01), Xiaofan
patent: 6760085 (2004-07-01), Sato et al.
patent: 2002/0140929 (2002-10-01), Kittaka et al.
patent: 2003/0026540 (2003-02-01), Fukuzawa et al.
patent: 2003/0035621 (2003-02-01), Kittaka et al.
Hashizume Hideki
Lu Haiguang
Chiem Erin D
Font Frank G.
Nippon Sheet Glass Co. Ltd.
Whitham Curtis Christofferson & Cook, P.C.
LandOfFree
Wavelength selective optical device and method of tuning a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wavelength selective optical device and method of tuning a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wavelength selective optical device and method of tuning a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2777469