Optical systems including add drop devices and methods

Details Optical systems including add drop devices and methods Optical systems including add drop devices and methods

2005-08-23

2005-08-23

Sedighian, M. R. (Department: 2633)

Optical communications

Multiplex

Wavelength division or frequency division

C398S084000

Reexamination Certificate

active

06934473

ABSTRACT:
Optical systems of the present invention include an add/drop device and/or cross-connect device, which is reconfigurable to add and drop signal wavelengths between one or more transmission paths. The add/drop device includes a first selective element configurable to pass a first group of signal wavelengths including at least a first signal wavelength from an input path to a first add/drop path and pass continuing signal wavelengths differing from the first group of signal wavelength to a second add/drop path. A second selective element is provided that is configurable to pass a second group of signal wavelengths including at least a second signal wavelength from said first add/drop path and continuing signal wavelengths differing from the second group of wavelengths from said second add/drop path to an output path. The second selective element is further configured to pass the second group of signal wavelengths from said second add/drop path and wavelengths differing from the second wavelength from said first add/drop path to a drop path. The add/drop device may also include an add path to introduce add signal wavelengths directly to the output path or via at least one of the first and second selective elements.

REFERENCES:
patent: 5283686 (1994-02-01), Huber
patent: 5446809 (1995-08-01), Fritz et al.
patent: 5457758 (1995-10-01), Snitzer
patent: 5555118 (1996-09-01), Huber
patent: 5570440 (1996-10-01), Mizrahi
patent: 5579143 (1996-11-01), Huber
patent: 5600473 (1997-02-01), Huber
patent: 5712932 (1998-01-01), Alexander et al.
patent: 5726785 (1998-03-01), Chawki et al.
patent: 5771112 (1998-06-01), Hamel et al.
patent: 5778118 (1998-07-01), Sridhar
patent: 5940197 (1999-08-01), Ryu
patent: 5946430 (1999-08-01), Morrow et al.
patent: 6025941 (2000-02-01), Srivastava et al.
patent: 6038357 (2000-03-01), Pan
patent: 6061484 (2000-05-01), Jones et al.
patent: 6243179 (2001-06-01), Thompson et al.
patent: 6281997 (2001-08-01), Alexander et al.
patent: 6538783 (2003-03-01), Stephens
patent: WO 97/06614 (1997-02-01), None
Oda, Kazuhiro, et al., An Optical FDM-Add/Drop Multiplexing Ring Network Utilizing Fiber Fabry-Perot Filters and Optical Circulators, pp. 825-828, IEEE Photonics Technology Letters, vol. 5, No. 7, Jul., 1993.
Chawki, M.J., et al., Wavelength Reuse Scheme in a WDM Undirectional Ring Network Using a Proper Fibre Grating Add/Drop Multiplexer, pp. 476-477, Electronics Letters, Mar. 16, 1995, vol. 31, No. 6.

Affiliated with

Also associated with

Rating

Optical systems including add drop devices and methods does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical systems including add drop devices and methods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical systems including add drop devices and methods will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3442284