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8995796 System for generating a beat signal  
The invention relates to a system (1) for generating a (high-frequency) beat signal. The system has a first light source (3) with a multimode spectrum, a second light source (4) and a coupler and...
8995813 Optical waveguide attenuator for a polarized light source  
An optical apparatus comprises: a waveguide substrate, optical cladding formed on the substrate; a waveguide core formed within the cladding, an optically absorptive layer formed within the...
8942567 Optical receiving device and communication system  
An optical receiving device includes multiple input ports to which light is input; multiple amplifiers that are arrayed and provided corresponding to the input ports, respectively, each of the...
8938148 Variable optical attenuator  
In one embodiment, a variable optical attenuator includes a core configured to propagate optical data signals and a cladding surrounding at least part of the core and comprising a first cladding...
8849086 Optical fiber attenuator  
An optical fiber attenuator includes a connector unit, an insert component and an attenuation unit. The connector unit includes a shell member and having a first shell part, and a second shell...
8811789 Optical transmission fiber with thermal management for high power applications  
An optical transmission fiber including a core having a first index of refraction, a cladding material located around the core and having a second index of refraction less than the first index of...
8805154 Organizing device for optical fiber lines  
An organizing device is for organizing multiple optical fiber lines to run parallel to each other on a plane. The organizing device includes a guiding unit and a positioning unit. The positioning...
8768108 Solid state light source based on hybrid waveguide-down-converter-diffuser  
A solid state light source comprising a light pump outputting light energy; a waveguide optically coupled to the light pump source for receiving the light energy; and a down-converter for...
8754658 Variable transmission optical filter  
A method for controlling an amplitude of an incoming light is provided. The method includes attenuating a portion of the incoming light within a first band having a tunable peak attenuation...
8666218 Compact thermal actuated variable optical attenuator  
A MEMS variable optical attenuator (VOA) chip includes a frame having a planar surface, a micro-electric actuator with a movable optical shutter arranged with respect to the planar surface of the...
8660399 Linearity calibration standard for fiber optic power meters  
An integrated, more automated system for determining the linearity of measurements of fiber optic power meters reduces the time and expense needed for linearity calibration. The system uses the...
8634691 Low-cost fast variable optical attenuator for optical wavelength tracking  
Variable optical attenuator (VOA) formed by disposing upon a substrate a waveguide, a p-type region and an n-type region about the waveguide, and an epi-silicon region disposed upon the waveguide,...
8625943 Waveguide device and module  
Excess optical power in a waveguide device is appropriately terminated. According to one embodiment of the present invention, the waveguide device comprises a termination structure filled with a...
8620131 Variable optical attenuator (VOA)  
A variable optical attenuator includes a collimating unit that collimates an incident light beam, a polarization splitting member that separates the collimated light beam into a first polarized...
8620125 Light diffusing fibers and methods for making the same  
Light diffusing optical fibers and methods for producing light diffusing optical fibers are disclosed. In one embodiment, a light diffusing optical fiber includes a core portion formed from silica...
8538229 Pluggable variable optical attenuators and methods for making the same  
Various designs of pluggable variable optical attenuator (VOA) are disclosed. A pluggable VOA has an optical fiber adaptor connected to an internal VOA via different fiber optical interface...
8498512 Controlling beam intensity in an ophthalmic fiber optic illumination system using rotatable plate arrays  
An ophthalmic illumination system includes a collimated light beam focused onto an optical fiber for transmission of the light beam to an ophthalmic light probe. A light attenuator includes a pair...
8494336 Variable optical attenuator comprising hollow core waveguide  
A variable optical attenuator device is described that comprises a first optical input, a first optical output, a first optical path between the first optical input and the first optical output,...
8469603 Mating of optical fibers having angled end faces  
A method for mating optical fibers, a fiber optic connector, and a fiber optic subassembly are provided in which mating fibers have angled end faces joined by index matching fluid, but in which...
8463088 Multi-channel optical device  
The multi-channel optical device includes multiple laser cavities that each reflects a different light channel back and forth between reflective components. One of the reflective components is...
8457465 Optical attenuation system  
An optical attenuation system that includes first and second attenuators providing different attenuations of corresponding received optical signals. The first attenuator receives an optical signal...
8452152 Fixed attenuation air gap interface for a multimode optical fiber interconnection  
A fiber-to-fiber connector system that includes a first connector for housing a portion of a first fiber, where the first fiber is terminated by a first end-face. The fiber-to-fiber connection...
8428414 Single-mode optical fiber having reduced bending losses  
A single-mode optical fiber includes a central core, an intermediate cladding, a depressed trench, and an external optical cladding. The central core has a radius r1 and a positive refractive...
8393408 Power tool with optical control  
An optical control is disclosed which is particularly suitable for application as a switching device, regulating device or sensor device for a power tool. At least two optical waveguides are...
8391653 Device for applying a fiber-optic monitoring system to a component to be monitored  
An adapter device for applying a fiber-optic monitoring system to a component to be monitored includes a shell adapted to surround the component to be monitored, the shell having a rounded exposed...
8379221 Interference cavity for controlling optical path  
The present patent application provides an interference cavity for precisely controlling an optical path including a cavity formed by two equal distance arms, wherein a positive adjusting plate...
8369658 Optical modulators employing charge state control of deep levels  
A method involving: providing an optical waveguide made of a semiconductor material and having a region that is doped by a deep level impurity which creates deep level states in a bandgap in the...
8358882 Modalmetric fibre sensor  
A modalmetric fibre sensor comprises a multimode sensor fibre (26), a light source (14) for launching light into the multimode fibre (26) to produce a multimode speckle pattern of light at an end...
8349217 Method for producing positive electrode material for secondary battery  
The present invention has features in that a lithium transition metal silicate obtained by sintering a mixture containing a transition metal compound containing at least one transition metal...
8335422 Cable exit trough with insert  
A cable exit trough with pivoting cover. The cover having a cover plate and a pivot plate hingedly mounted thereto for easy access to the trough. The exit trough may define an insert aperture for...
8326109 Low-cost fast variable optical attenuator for optical wavelength tracking  
Variable optical attenuator (VOA) formed by disposing upon a substrate a waveguide, a p-type region and an n-type region about the waveguide, and an epi-silicon region disposed upon the waveguide,...
8308374 Mating of optical fibers having angled end faces  
A method for mating optical fibers, a fiber optic connector, and a fiber optic subassembly are provided in which mating fibers have angled end faces joined by index matching fluid, but in which...
8306370 Mach zehnder modulator  
A Mach Zehnder (MZ) modulator (1) includes a splitter (4) for splitting incident light in one wave guide (3) into two modulator arms (5,6) of the MZ and a combiner (7) that combines light from the...
8297854 Multimode fiber optic assemblies  
Fiber optic assemblies including at least one multimode optical fiber that have improved performance are disclosed. In one embodiment, at least one connector is mounted upon and end of at least...
8295660 Light application and method for producing a diffusor  
A light applicator (27) for medical applications is proposed whose diffusor (1) comprises diffusion regions (7, 8, 9) with paraboloidal boundary surfaces (11, 12) This configuration of the...
8295671 Coated optical fibers and related apparatuses, links, and methods for providing optical attenuation  
Coated optical fibers and related apparatuses, links, and methods for optically attenuating light directed to or from optical fibers are disclosed. In one embodiment, an optical fiber includes an...
8280218 Optical attenuator  
A tilting mirror MEMS variable optical attenuator attenuates light over a band of wavelengths with minimum wavelength dependent loss. The attenuator includes a lens that has a wedged input face...
8229269 Apparatus and methods for attenuating and measuring light passed through a launch multimode fiber  
An exemplary apparatus includes ferrule offset assemblies each having opposing ferrules with respective ends and respective fiber channels maintained in general relative and adjustable alignment....
8229259 Tamper sensing device  
A device having a case, an input optical fiber and an output optical fiber and a light path extending between the input and output optical fiber. A light path interrupting element is disposed...
8204350 Optical fiber structure with filtering thin film  
An optical fiber with filtering thin film includes a first ferrule having a first through hole and a first contact surface. A first fiber is disposed into the first through hole, extending to the...
8189978 High numerical aperture multimode optical fiber  
Bend resistant multimode optical fibers are disclosed herein. Multimode optical fibers disclosed herein comprise a core region having a radius greater than 30 microns and a cladding region...
8111994 Balanced bypass circulators and folded universally-balanced interferometers  
The invention generally relates, in one aspect, to an interferometer system. The interferometer system includes a splitter/combiner element (SCE), a first bi-directional optical path, and a second...
8107819 Systems and methods for interference prediction  
An optical network device of a passive optical network is introduced. The optical network device includes a light source, a control unit, and a variable optical attenuator. The light source can...
8098991 Wideband RF photonic link for dynamic co-site interference mitigation  
A method is provided for co-site interference mitigation in an RF communication system. Spectral nulls created in an optical domain may be used to mitigate interfering signals in an RF signal. The...
8064036 Liquid crystal optical switch configured to reduce polarization dependent loss  
An optical device has the structure to perform switching and attenuation of an optical beam with reduced polarization dependent loss (PDL). The optical device includes a birefringent displacer and...
8053670 Apparatus for an electrical equipment enclosure with tubular weatherproofing of electrical connections  
An apparatus for an electrical equipment enclosure with tubular weatherproofing of electrical connections is disclosed. In one embodiment of the invention, one or more weatherproofing tubes...
7991260 Light-diffusing safety cap  
A light-diffusing safety cap for use with a light cable that couples an endoscope to a high intensity light source. The light-diffusing safety cap can be detachably or releasably coupled, in lieu...
7948670 Optical attenuator  
An optical attenuator includes a first reflection portion reflecting a light incoming from an optical input portion in a direction different from incoming axis, a second reflection portion...
7909958 Apparatus and method for optical switching with liquid crystals and birefringent wedges  
An optical switch includes an optical waveguide to route an input optical beam. At least one polarization switch receives the input optical beam from the optical waveguide. At least one...
RE42124 Fault-tolerant fiber-optical beam control modules  
Fiber-optic beam routing and amplitude control modules based on a unique fault-tolerant scheme using a macro-pixel to control an optical beam are proposed. The unique macro-pixel method involving...