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Browse by Category: Main > Optical & Optics
Class Information
Number: 385/140
Name: Optical waveguides > Accessories > Attenuator
Description: Subject matter involving a device which reduces the intensity of light entering or exiting a waveguide.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
6633721 Variable optical attenuator Oct. 14, 2003
6631227 Information recording and reproducing apparatus Oct. 7, 2003
6631238 Variable optical attenuator Oct. 7, 2003
6631224 Tunable filter with core mode blocker Oct. 7, 2003
6628392 Light modulation apparatus and optical switch, movement detecting device and distance measuring device, alignment device and semiconductor aligner, and processes thereof Sep. 30, 2003
6628852 Isolation device Sep. 30, 2003
6628882 VOA device and attenuation method with improved linearity Sep. 30, 2003
6625378 Variable optical attenuator device Sep. 23, 2003
6625377 Variable optical attenuator Sep. 23, 2003
6621953 Optical arrangement for transmitting short laser pulses in optical fibers Sep. 16, 2003
6621952 In-fiber variable optical attenuators and modulators using index-changing liquid media Sep. 16, 2003
6614982 Variable optical attenuator Sep. 2, 2003
6614983 Variable optical attenuator Sep. 2, 2003
6614958 Optical imaging system Sep. 2, 2003
6614016 Method for optically determining the position of a movement element and sensor for implementing the method Sep. 2, 2003
6612754 Method and apparatus for splicing optical fibers Sep. 2, 2003
6611649 Variable optical attenuator with polarization maintaining fiber Aug. 26, 2003
6606446 Miniature variable attenuator Aug. 12, 2003
6604865 Optical plug-in connector having optical waveguides held in ferrules for the pluggable connection to a counterplug Aug. 12, 2003
6606447 Optical attenuator including dual control loops Aug. 12, 2003
6603902 Wavelength selective variable reflector Aug. 5, 2003
6599024 Fiber optic adapter with attenuator and method Jul. 29, 2003
RE38205 Variable attenuator connector Jul. 29, 2003
6600867 Variable optical attenuator Jul. 29, 2003
6590684 Optical system Jul. 8, 2003
6587632 Thermo-optic tunable optical attenuator Jul. 1, 2003
6587288 Optical attenuation filter Jul. 1, 2003
6584271 Dual fiber variable optical attenuator Jun. 24, 2003
6580868 High-resolution variable optical attenuator with mechanical adjustment Jun. 17, 2003
6574413 Arrangement and method for the channel-dependent attenuation of the levels of a plurality of optical data channels Jun. 3, 2003
6563965 Analog optical switch using an integrated Mach-Zehnder interferometer having a moveable phase shifter May. 13, 2003
6560379 Variable optical filter unit and variable gain equalizing system May. 6, 2003
6560000 Wavelength-dependent optical signal processing using an angle-to-offset module May. 6, 2003
6560396 Variable optical attenuator May. 6, 2003
6556766 MEMS see-saw array for dynamic gain equalization of DWDM systems Apr. 29, 2003
6556765 Planar variable optical attenuator Apr. 29, 2003
6556338 MEMS based variable optical attenuator (MBVOA) Apr. 29, 2003
6554462 Optical waveguide structures Apr. 29, 2003
6556736 Dynamic passband shape compensation of optical signals Apr. 29, 2003
6553175 Variable optical attenuator Apr. 22, 2003
6542689 Attenuator for buffered optical fibers Apr. 1, 2003
6539148 Channel equalizer with acousto-optic variable attenuators Mar. 25, 2003
6538816 Micro-electro mechanical based optical attenuator Mar. 25, 2003
6532322 Channel equalizer with acousto-optic variable attenuators Mar. 11, 2003
6529672 Elimination of optical power limitation due to stimulated raman scattering in fiber optic links Mar. 4, 2003
6529673 Manual variable optical attenuator and method Mar. 4, 2003
6529674 Optical devices employing an optical thresholder Mar. 4, 2003
6526192 Fiber fuse protection Feb. 25, 2003
6519074 Electrostatically-actuated tunable optical components using entropic materials Feb. 11, 2003
6519381 Optical switch and method of producing the same Feb. 11, 2003

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