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Class Information
Number: 398/87
Name: Optical communications > Multiplex > Wavelength division or frequency division (e.g., raman, brillouin, etc.) > By optical coupling > Grating
Description: Subject matter wherein 1) a beam is coupled in or out of a waveguide to accomplish a desired multiplexing by narrow parallel slits in a plate or 2) narrow parallel reflecting surfaces made by ruling grooves on polished metal break up the light waves as they emerge.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7593638 |
Secure upstream transmission in passive optical networks |
Sep. 22, 2009 |
| 7587103 |
Method for ultrafast optical deflection enabling optical recording via serrated or graded light illumination |
Sep. 8, 2009 |
| 7583423 |
Switchable polymer-dispersed liquid crystal optical elements |
Sep. 1, 2009 |
| 7580639 |
Characterization and control of optical dispersion compensating element |
Aug. 25, 2009 |
| 7577370 |
Method and apparatus for extracting optical clock signal |
Aug. 18, 2009 |
| 7574134 |
Method of determining at least one variable of a WDM optical network |
Aug. 11, 2009 |
| 7573272 |
Antenna reconfiguration verification and validation |
Aug. 11, 2009 |
| 7538945 |
Optical path changing module |
May. 26, 2009 |
| 7492999 |
Optical fiber and optical-fiber transmission line |
Feb. 17, 2009 |
| 7480429 |
Chip to Chip optical interconnect |
Jan. 20, 2009 |
| 7468840 |
Wavelength selective optical switch |
Dec. 23, 2008 |
| 7463828 |
Optical channel monitor |
Dec. 9, 2008 |
| 7457495 |
Method of filtering optical signals with a capillary waveguide tunable optical device |
Nov. 25, 2008 |
| 7457544 |
Single channel four-port group delay compensation equalizer |
Nov. 25, 2008 |
| 7454139 |
High-capacity packet-switched ring network |
Nov. 18, 2008 |
| 7424226 |
Optical code division multiplexing communication method and system |
Sep. 9, 2008 |
| 7398021 |
Optical transmitter and passive optical network using the same |
Jul. 8, 2008 |
| 7394986 |
Flat top optical filtering component |
Jul. 1, 2008 |
| 7389048 |
Optical wavelength-division multiple access system and optical network unit |
Jun. 17, 2008 |
| 7372607 |
Apparatus for reducing drops in a transmission spectrum due to inter-pixel gaps |
May. 13, 2008 |
| 7362931 |
Optical conversion device for shared FTTH distribution network |
Apr. 22, 2008 |
| 7359051 |
Multiple-wavelength spectroscopic apparatus |
Apr. 15, 2008 |
| 7352968 |
Chirped managed, wavelength multiplexed, directly modulated sources using an arrayed waveguide grating (AWG) as multi-wavelength discriminator |
Apr. 1, 2008 |
| 7340175 |
Non-uniform optical waveband aggregator and deaggregator and hierarchical hybrid optical cross-connect system |
Mar. 4, 2008 |
| 7333729 |
Optical transmitter, optical receiver and optical transmission system using same |
Feb. 19, 2008 |
| 7330659 |
Wavelength filter that operates on sets of wavelength channels |
Feb. 12, 2008 |
| 7317875 |
Optical communication network system, wavelength routing apparatus, communication node, optical path managing method for use in optical cross connect apparatus, and apparatus for that method |
Jan. 8, 2008 |
| 7315697 |
Light source for generating an output signal having spaced apart frequencies |
Jan. 1, 2008 |
| 7310463 |
Optical structural body, its manufacturing method and optical element |
Dec. 18, 2007 |
| 7302138 |
Arrayed waveguide grating device |
Nov. 27, 2007 |
| 7302179 |
Optical performance monitor using co-located switchable fiber bragg grating array |
Nov. 27, 2007 |
| 7298540 |
Equalizing optical wavelength routers |
Nov. 20, 2007 |
| 7295738 |
System and method for performing dispersion compensation |
Nov. 13, 2007 |
| 7295783 |
Digital optical network architecture |
Nov. 13, 2007 |
| 7292755 |
Optical resonator formed in a planar optical waveguide with a distributed optical structure |
Nov. 6, 2007 |
| 7292786 |
Method and system for a re-configurable optical multiplexer, de-multiplexer and optical add-drop multiplexer |
Nov. 6, 2007 |
| 7286764 |
Reconfigurable modulator-based optical add-and-drop multiplexer |
Oct. 23, 2007 |
| 7286732 |
Distributed optical structures designed by computed interference between simulated optical signals |
Oct. 23, 2007 |
| 7277640 |
Optical add/drop multiplexing systems |
Oct. 2, 2007 |
| 7262898 |
Apparatus for reducing drops in a transmission spectrum due to inter-pixel gaps |
Aug. 28, 2007 |
| 7263291 |
Wavelength division multiplexing source using multifunctional filters |
Aug. 28, 2007 |
| 7254338 |
Multi-wavelength light source |
Aug. 7, 2007 |
| 7254293 |
Wavelength routing optical switch |
Aug. 7, 2007 |
| 7251396 |
Device for tailoring the chromatic dispersion of a light signal |
Jul. 31, 2007 |
| 7239809 |
Electrical pulse transformation using optical delay lines |
Jul. 3, 2007 |
| 7233443 |
Arrangement for WDM multiplexing and demultiplexing |
Jun. 19, 2007 |
| 7231150 |
Method and apparatus for sensing a temperature along an optical path in semiconductor material |
Jun. 12, 2007 |
| 7224902 |
Optical encoding method and encoder for optical code division multiplexing |
May. 29, 2007 |
| 7224867 |
Holographic spectral filter |
May. 29, 2007 |
| 7215884 |
Optical demultiplexer having bragg diffration grating and optical communication module using the optical demultiplexer |
May. 8, 2007 |
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