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7609934 |
Integrated tunable optical equalizer
Provided is an apparatus and method for use thereof. The apparatus, in one embodiment, includes first and second 1 ×N couplers integrated on a substrate and configured to receive an optical...
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7599596 |
Optical receiver for use with range of signal strengths
A receiver includes a waveguide defined in a layer of silicon positioned on a base. The waveguide is immobilized relative to the base along the length of the waveguide. The waveguide is unbranched...
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7590312 |
Interferometer optical switch and variable optical attenuator
The present invention discloses an interferometer optical switch that can carry out switching over a broad band and has a high extinction ratio and large fabrication tolerance. The interferometer...
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7589915 |
Optical element, optical module holder including optical element, optical module, and optical connector
It is to provide an optical element, an optical module holder including the optical element, an optical module, and an optical connector that can attenuate with high accuracy an amount of light...
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7587103 |
Method for ultrafast optical deflection enabling optical recording via serrated or graded light illumination
In one general embodiment, a method for deflecting an optical signal input into a waveguide is provided. In operation, an optical input signal is propagated through a waveguide. Additionally, an...
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7580609 |
Fiber intensity reducing devices and related systems
A fiber intensity reducer comprises a guided system fiber including a core and an outer cladding layer, an unguided fiber intensity reducing (FIR) section including a first fiber “end cap...
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7580600 |
Free space high power fiber coupler
A waveguide receiving light which propagates through free space is configured with a coupler and delivery fiber. The coupler, including a GREEN or multimode fiber, has a protective coating and so...
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7580593 |
Optical attenuator
In an optical attenuator, there are a first optical waveguide 3 A connected to an input optical waveguide 1 , a second optical waveguide 3 B connected to an output optical waveguide 2 and a...
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7574096 |
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 and...
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7574082 |
Optical power monitoring with robotically moved macro-bending
A method may include bending a first optical fiber of a plurality of optical fibers; measuring light leaked from the first optical fiber with a photo detector; robotically moving the photo detector...
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7567745 |
Optical attenuator and method of manufacture
In the manufacture of an optical attenuator having a desired value of the optical loss end regions of two optical fibers are placed with an offset in the traverse direction in relation to each...
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7554717 |
Optical transmission device equipped with pluggable variable optical attenuator
Disclosed is an optical transmission device with a simple configuration that can attenuate an input optical power only when it is necessary so that it falls within a predetermined range, and can...
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7551828 |
Optical transmission device for controlling optical level of transmission signal in optical transmission system
An optical transmission device includes: an attenuator that attenuates an optical signal before being input into an optical element by a predetermined attenuation amount determined so that a level...
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7551823 |
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...
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7546008 |
Variable optical attenuator and ranging apparatus using the same
A variable optical attenuator for adjusting a power of light which is output from an output end of a first optical fiber and is to be led to an input end of a second optical fiber, includes a...
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7542645 |
Airline optical fiber with reduced multipath interference and methods of forming same
An airline (AL) optical fiber (“AL fiber”) that has an AL region with airlines, with the AL region arranged relative to the fiber core so as to make the fiber bend insensitive. The AL region is...
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7542631 |
Optical transmission system
An optical transmission system which provides bandwidth restricted optical signal comprises an input terminal ( 10 ) for accepting an electrical binary signal, an amplifier ( 12 ) for amplifying...
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7529459 |
Electrical reset of optical functions for tunable fiber optical devices
Control of attenuators used to regulate optical signals is disclosed. An assembly including an IR source and an IR sensor is provided to sense blockage of optical signals transmitted between two...
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7522808 |
Variable optical attenuator
A variable optical attenuator with photoelectric detector, comprising a collimator, a variable optical attenuator chip, wherein the variable optical attenuator further comprises a photoelectric...
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7504630 |
Method and apparatus for attenuating a light beam
Attenuators used to regulate optical signals are disclosed. According to one aspect of the present invention, an assembly including an IR source and an IR sensor is provided to sense blockage of...
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7499624 |
Ophthalmic Endoilluminator with Variable-Wedge Rotating-Disk Beam Attenuator
An ophthalmic endoilluminator includes a light source, a variable-wedge rotating-disk attenuator, a condensing lens, and an optical fiber. The variable-wedge rotating-disk attenuator attenuates the...
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7486860 |
Multi-dwelling unit optical fiber splitting unit
A multiple dwelling unit (MDU) optical fiber splitting unit (FBU). One or more fiber strands enters the FBU at the MDU. Each strand may be connected to a variable attenuator. Each strand is subject...
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7474830 |
System and method for determining fiber characteristics
A system is provided for characterizing optical fibers carrying signal traffic. The system includes a transmitter, a variable optical attenuator (VOA), a receiver, and a computing device. The...
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7460757 |
Distributor system and method for fibre optic cables
The invention relates to a method and a device for coupling fiber optic cables. Said device comprises at least one module, which is equipped with at least one retaining unit for retaining at least...
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7457495 |
Method of filtering optical signals with a capillary waveguide tunable optical device
A method of filtering optical signals ( 300 ) utilizing an optical fiber ( 100 A- 100 D). The method of filtering optical signals ( 300 ) includes the steps ( 304 ) selecting an optical fiber ( 100...
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7454118 |
Expanded beam optical attenuator
An attenuator for optical signals includes a base. A first ferrule has a first optic fiber passing through a central bore therein and attached to a first lens at an end of the first ferrule. The...
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7450812 |
Compensated variable optical attenuator
An electrically variable optical attenuator and associated methods are disclosed. In one aspect, the attenuator includes at least one sensor that provides a sensor output with respect to a variable...
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7444060 |
Liquid ejecting apparatus
A liquid ejecting apparatus which includes a plurality of transport belts, upstream and downstream liquid ejecting units that include a plurality of liquid ejecting heads which are arranged at...
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7444057 |
Variable-wedge rotating-disk beam attenuator for ophthalmic endoilluminator
A variable-wedge rotating-disk attenuator for use in an ophthalmic endoilluminator is disclosed. The attenuator includes a wedge attached to an axle. The size of the wedge can be adjusted over a...
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7440643 |
Variable light controlling device and variable light controlling method
A variable light controlling device comprising a substrate, an optical waveguide disposed on the substrate, a first heater and a second heater to change the optical waveguide's temperature is...
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7433556 |
Optical rotary joint
A device for transmitting optical signals comprises two collimator units, supported to be rotatable relative to each other about a rotation axis and one derotating optical element. A first beam...
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7406244 |
Method of using an ultrathin optical element
The present invention provides an ultra-thin high-precision glass optic and method of manufacturing the same. The optic has an axial thickness that is less than 1,000 microns. A pattern and/or...
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7403684 |
Optical fuse and component for fabricating optical fuse
Disclosed are an optical fuse and a device for fabricating such an optical fuse. The optical fuse comprises a medium constituting a structure in which a light-emitting end of a first optical...
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7403672 |
Integrated linear polarizer
A method for creating an integrated linear polarizer is provided. An electro-optical component is fabricated and may include a bottom electrode, a bottom cladding layer, side cladding features, an...
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7397983 |
Light applicator and method for producing a diffuser
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...
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7394994 |
Optical receiver circuit
An optical receiver circuit comprising an optical converter circuit ( 38 ), comprising a photodiode and converting optical power into electrical power, a sensor circuit for deriving a control...
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7391954 |
Attenuated optical splitter module
A compact optical splitter module is disclosed. One type of compact optical splitter module is a planar attenuated splitter module that includes a branching waveguide network having j≧1 50:50...
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7389033 |
Planar lightwave circuit type variable optical attenuator
A planar lightwave circuit type variable optical attenuator with a small polarization dependent loss is provided. By setting the waveguide birefringence (absolute value) in first and second optical...
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7389032 |
Method and apparatus for adjusting loss caused by optical fiber curvature, and optical transmission system using the same
The present invention achieves highly reliable optical-fiber loss adjustment at low cost, with easy work. An optical fiber is inserted from an optical fiber insertion opening into a space between...
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7376327 |
Optical device and method for the spectrally-designed attenuation of a multi-wavelength light signal
A device and method for the spectrally-designed and controlled attenuation of a light signal, including an attenuation structure which may be placed in the proximity of a waveguide's core and which...
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7373073 |
Photonic colloidal crystal columns and their inverse structures for chromatography
The present invention provides a straightforward and robust synthetic process for producing a chromatographic column with eluent-sensitive light diffracting properties based on an inherent photonic...
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7362932 |
Method for fabricating optical devices by assembling multiple wafers containing planar optical waveguides
An optical device comprises a first substrate wafer with at least one buried optical waveguide on an approximately flat planar surface of the substrate and a second substrate wafer with at least a...
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7356212 |
Optical waveguide device and method of adjusting a transmission loss thereof
An optical waveguide device includes a plurality of optical waveguides propagating therethrough a signal beam, and a plurality of optical sub-waveguides connected to the plurality of optical...
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7352937 |
Devices, systems and methods for connecting a single mode fiber to a legacy multi-mode fiber
Exemplary embodiments of the present invention provide for methods to launch data signals from single mode fiber optic cable into legacy multimode fiber optic cable. In one exemplary embodiment, a...
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7340143 |
Semiconductor Raman variable optical attenuator/amplifier and equalizer
A semiconductor-based optical amplifier/attenuator is disclosed. An apparatus according to aspects of the present invention includes an optical waveguide disposed in semiconductor material. A first...
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7340125 |
Optical switches and switching methods
A device and method for collecting subject responses, particularly during magnetic imaging experiments and testing using a method such as functional MRI. The device comprises a non-metallic input...
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7330630 |
Waveguide type variable optical attenuator
A waveguide type variable optical attenuator is provided with a substrate for forming a waveguide for optical signal propagation; a waveguide element comprising 2 arm waveguides arranged on the...
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7310463 |
Optical structural body, its manufacturing method and optical element
A single pulse laser beam of linear polarization is irradiated to a glass region such that the condensing point is located inside of the glass region, thereby to form, at the condensing point, a...
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7308185 |
Ultra-thin high-precision glass optic
The present invention provides an ultra-thin high-precision glass optic and method of manufacturing the same. The optic has an axial thickness that is less than 1,000 microns. A pattern and/or...
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RE39934 |
Adjustable optical attenuator
An optical attenuator for attenuating a collimated beam of light propagating along an optical path while preserving the composition of polarization of the collimated beam of light is disclosed. The...
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