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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
8666218 Compact thermal actuated variable optical attenuator Mar. 4, 2014
8660399 Linearity calibration standard for fiber optic power meters Feb. 25, 2014
8634691 Low-cost fast variable optical attenuator for optical wavelength tracking Jan. 21, 2014
8625943 Waveguide device and module Jan. 7, 2014
8620131 Variable optical attenuator (VOA) Dec. 31, 2013
8620125 Light diffusing fibers and methods for making the same Dec. 31, 2013
8538229 Pluggable variable optical attenuators and methods for making the same Sep. 17, 2013
8498512 Controlling beam intensity in an ophthalmic fiber optic illumination system using rotatable plate arrays Jul. 30, 2013
8494336 Variable optical attenuator comprising hollow core waveguide Jul. 23, 2013
8469603 Mating of optical fibers having angled end faces Jun. 25, 2013
8463088 Multi-channel optical device Jun. 11, 2013
8457465 Optical attenuation system Jun. 4, 2013
8452152 Fixed attenuation air gap interface for a multimode optical fiber interconnection May. 28, 2013
8428414 Single-mode optical fiber having reduced bending losses Apr. 23, 2013
8393408 Power tool with optical control Mar. 12, 2013
8391653 Device for applying a fiber-optic monitoring system to a component to be monitored Mar. 5, 2013
8379221 Interference cavity for controlling optical path Feb. 19, 2013
8369658 Optical modulators employing charge state control of deep levels Feb. 5, 2013
8358882 Modalmetric fibre sensor Jan. 22, 2013
8349217 Method for producing positive electrode material for secondary battery Jan. 8, 2013
8335422 Cable exit trough with insert Dec. 18, 2012
8326109 Low-cost fast variable optical attenuator for optical wavelength tracking Dec. 4, 2012
8308374 Mating of optical fibers having angled end faces Nov. 13, 2012
8306370 Mach zehnder modulator Nov. 6, 2012
8297854 Multimode fiber optic assemblies Oct. 30, 2012
8295660 Light application and method for producing a diffusor Oct. 23, 2012
8295671 Coated optical fibers and related apparatuses, links, and methods for providing optical attenuation Oct. 23, 2012
8280218 Optical attenuator Oct. 2, 2012
8229269 Apparatus and methods for attenuating and measuring light passed through a launch multimode fiber Jul. 24, 2012
8229259 Tamper sensing device Jul. 24, 2012
8204350 Optical fiber structure with filtering thin film Jun. 19, 2012
8189978 High numerical aperture multimode optical fiber May. 29, 2012
8111994 Balanced bypass circulators and folded universally-balanced interferometers Feb. 7, 2012
8107819 Systems and methods for interference prediction Jan. 31, 2012
8098991 Wideband RF photonic link for dynamic co-site interference mitigation Jan. 17, 2012
8064036 Liquid crystal optical switch configured to reduce polarization dependent loss Nov. 22, 2011
8053670 Apparatus for an electrical equipment enclosure with tubular weatherproofing of electrical connections Nov. 8, 2011
7991260 Light-diffusing safety cap Aug. 2, 2011
7948670 Optical attenuator May. 24, 2011
7909958 Apparatus and method for optical switching with liquid crystals and birefringent wedges Mar. 22, 2011
RE42124 Fault-tolerant fiber-optical beam control modules Feb. 8, 2011
7881572 System and method for determining fiber characteristics Feb. 1, 2011
7865054 Apparatus and method for handling an optical signal Jan. 4, 2011
7826693 Monolithically integrated reconfigurable optical add-drop multiplexer Nov. 2, 2010
7813613 Optical connections and methods of forming optical connections Oct. 12, 2010
7805047 Optical transmission system Sep. 28, 2010
7773851 Attenuated optical splitter module Aug. 10, 2010
7760972 Multiport switch for optical performance monitor Jul. 20, 2010
7751675 Wall box adapted to be mounted at a mid-span access location of a telecommunications cable Jul. 6, 2010
7741606 Motor driven variable optical attenuator with IR sensor closed-loop control Jun. 22, 2010

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