Wavelength demultiplexing unit

Details Wavelength demultiplexing unit Wavelength demultiplexing unit

2007-12-04

2007-12-04

Chan, Jason (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S082000

Reexamination Certificate

active

10893435

ABSTRACT:
In a WDM transmission system, a wavelength selecting switch demultiplexes a first WDM light containing a plurality of wavelength components into a plurality of single wavelength lights each containing corresponding one of the wavelength components, effects multiplexing on the plurality of single wavelength lights to form a second WDM light, and effects demultiplexing on the outputted second WDM light. A wavelength demultiplexing unit demultiplexes the demultiplexed second WDM light into a plurality of wavelength demultiplexed lights for every wavelength component so that physical quantity monitoring can be made on each wavelength demultiplexed light deriving from the demultiplexing. In this way, transmission channel switching can be independently effected on the wavelength light having a single component contained in the WDM light, wavelength demultiplexing elements provided in a spectral optical system can be shared to reduce the number of elements, and the wavelength selection switch can be assembled with ease.

REFERENCES:
patent: 5414540 (1995-05-01), Patel et al.
patent: 6097518 (2000-08-01), Wu et al.
patent: 6535311 (2003-03-01), Lindquist
patent: 6549699 (2003-04-01), Belser et al.
patent: 6901175 (2005-05-01), Baxter et al.
patent: 2003/0072512 (2003-04-01), Nagaeda et al.
patent: 2003/0091261 (2003-05-01), Wu et al.
patent: 2003/0223670 (2003-12-01), Nikolov et al.
patent: 2005/0036202 (2005-02-01), Cohen et al.
patent: 2002-236264 (2002-08-01), None
K. Sato et al. “Envisaged IP Over Photonic Networks of The Year 2010(2) Cutting-Edge Technologies On Photonic Backbone Networks”, Electronic Information Society Magazine, vol. 85, No. 2, pp. 94-103, Feb. 2002.
M. Shirasaki, “Large Angular Dispersion By A Virtually Imaged Phased Array and Its Application to a Wavelength Demultiplexer”, 1996 Optical Society of America, Optics Letters, vol. 21, No. 5, pp. 366-368, Mar. 1, 1996.

Affiliated with

Also associated with

Rating

Wavelength demultiplexing unit 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 demultiplexing unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wavelength demultiplexing unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3825975