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6912338 |
Optical signal noise reduction device and method of reducing optical signal noise
An optical signal noise reduction device and method, where optical control signals are input into a first ring optical fiber, so that optical signals propagates clockwise and counter-clockwise in...
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6912336 |
Optical switch device
An optical switch device includes at least an optical switch element and driving control circuit. In the optical switch element, a fixed electrode portion is arranged, via a dielectric layer, on a...
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6912091 |
Method of designing collimator array device and collimator array device manufactured thereby
According to the present invention, there is provided a method of designing a collimator array device which enables reduction of the insertion loss because of the variation of the optical length....
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6912337 |
Network healing smart fiber optic switch
A network healing smart fiber optic switch for fast, automatic switching between multiple paths of an optical transmission line with minimal disruption. The network healing smart fiber optic switch...
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6912334 |
Optical switch
The invention provides an optical switch using a two-dimensional photonic crystal capable of enabling higher integration, an optical communications device and an optical communications system. An...
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6909825 |
Method of packaging optical parts for optical communication
The present invention relates to a method of packaging optical parts for optical communication. According to the method of the present invention, there are advantages in that a packaging process...
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6909835 |
Configurations for waveguide crossings
Configurations for optical waveguide crossings are described. In one exemplary implementation, an optical chip includes waveguides integrated on the optical chip. The waveguides have varied widths...
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6909824 |
Mechanically actuated evanescent-wave coupled optical devices
Apparatus using mechanically-actuated evanascent wave coupling. At least a portion of an optical waveguide is integrated onto a substrate, and an optically active element is physically moved...
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6909819 |
System and method for canceling disturbance MEMS devices
A system and method for canceling disturbance in a MEMS device. The system 200 includes a MEMS device 203 , which may include a substrate 205 and a plurality of individually movable MEMS...
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6907159 |
Configurable optical add/drop multiplexer with enhanced add channel capacity
An arrangement is provided for a configurable optical add/drop multiplexer (OADM) assembly. The configurable OADM assembly comprises at least one configurable optical add/drop multiplexer (C-OADM)...
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6905614 |
Pattern-transfer process for forming micro-electro-mechanical structures
Described is a photolithography “pattern transfer” process for forming Micro-Electro-Mechanical Systems (MEMS) structures. A first material layer is patterned so that raised portions of the...
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6907158 |
Configurable optical add/drop multiplexer with partial or complete wavelength drop capability
An arrangement is provided for a configurable optical add/drop multiplexer (OADM) mechanism. The configurable OADM mechanism comprises at least one configurable optical add/drop multiplexer...
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6907153 |
Rolling shutter optical switch device with latch electrode and slits in shutter
An optical switch device includes a rolling shutter or membrane attached at one of its edges to a substrate near an optical port in the substrate. The rolling shutter can assume one of two states....
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6906511 |
Magnetic position detection for micro machined optical element
A property of a magnetic sensor, deployed on a micro machined optical element and exposed to a magnetic field, changes as the position of the micro machined optical element changes with respect to...
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6904201 |
Phase-controlled fiber Bragg gratings and manufacturing methods
A fiber Bragg grating may be written at an arbitrary wavelength without extensive recalibration or reconfiguration of the writing equipment in some embodiments. A pair of writing beams may be used...
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6904193 |
Optical switch actuator
An optical switch actuator moving an optical element into or out of an optical pathway. The optical element is coupled to a movable shuttle and driven by a motor between two rest positions. The...
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6904192 |
Latching bubble for fluid-based optical switch
An optical switch having liquid or bubbles in switching sites operates with a fluid pressure less than the vapor pressure of the liquid. This pressure differential is equal to the surface tension...
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6904189 |
Fast wavelength-selective switch elements and switch matrices
Ultra fast, compact wavelength-selective 2×2 optical switches based on polarization splitters and preferably electro-optical polarization converters, and switch matrices based on such switches....
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6904191 |
MXN cantilever beam optical waveguide switch
An optical micro-electro-mechanical system (MEMS) switch is disclosed. In a preferred embodiment the optical MEMS switch is used as an M×N optical signal switching system. The optical MEMS switch...
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6904194 |
Optical switch apparatus
An optical switch apparatus is disclosed, which applies to the optical communication system or optical system for switching the optical path. The optical switch apparatus utilizes a servomotor...
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6904207 |
Waveguide type liquid-crystal optical switch
A waveguide type liquid-crystal optical switch including: an optical waveguide having a pair of first and second cores close to each other for switching an optical path between the pair of first...
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6904195 |
Optical switch with adjustable optical loss
An apparatus and method of controlling optical loss in an optical switch to equalize optical power or loss in a group of optical signals in an optical transmission system relatively insensitive to...
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6901175 |
Tunable wavelength multiplexer
A device for filtering at least a predetermined selected optical signal having a predetermined wavelength range from a series of optical signals, the device comprising: a polarisation alignment...
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6901180 |
MEMS optical switch on a single chip and method
The present invention provides for a 1×N optical switch having a switching component, an input, and a plurality of outputs formed in a single substrate. The switching component includes a pair of...
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6895157 |
Thermal optical switch apparatus and methods with enhanced thermal isolation
Thermal optical switch apparatus with enhanced thermal isolation includes a cladding region with first and second spaced apart waveguide cores buried therein to form first and second waveguides. A...
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6895143 |
Optical switching device comprising two waveguides whereof both smallest dimensions are less than the guided wavelengths
Each guide has an elongated shape, comprises an input at one end and an output at the other end, is arranged on the surface such that all the input ends of all the guides can be simultaneously...
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6895138 |
Optical switch and display unit
The present invention provides an optical switch for making part of incident light, which has been made incident on an optical waveguide, selectively emergent to a light emergence portion provided...
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6895139 |
Bistable thermopneumatic optical switch
An apparatus and method for switching optical signal is disclosed. An optical signal switch array includes a plurality of optical switches, each optical switch having a first trench adapted to hold...
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6891676 |
Tunable spectral filter
An optical spectral filtering device and associated method for selectively directing a portion of a wavelength multiplexed input signal, entering through an optical fiber, into one or more output...
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6891989 |
Optical switch systems using waveguide grating-based wavelength selective switch modules
The present invention discloses methods and apparatus for constructing optical switch systems, in which any input optical signals can be routed to any output ports. The methods and apparatus...
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6890619 |
Optical systems and refractive index-matching compositions
Optical systems such as, for example, optical switches, are disclosed comprising a solid component and a refractive index-matching liquid composition interfaced with the solid component. The liquid...
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6891988 |
Magnetic position detection apparatus for micro machined optical element
An apparatus having magnetic detection sensor deployed on a micro machined optical element is exposed to a magnetic field to sense change in property as the micro machined optical element is...
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6888975 |
Multi-dimensional optical cross-connect switching system
A multi-dimensional optical cross-connect switching system. The system is capable of multi-dimensionally using wavelength resources, such as in the forms of optical fibers, optical wavelength bands...
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6888973 |
Tunable optical add/drop multiplexer with multi-function optical amplifiers
A photonic circuit includes a tunable drop filter arrangement that includes a plurality of resonators. The drop filter arrangement is tuned to remove a selected frequency from an input data stream...
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6888977 |
Polymeric liquid metal optical switch
A polymeric optical switch in which a switching channel is formed in a polymer layer. The channel is formed by a micro-machining technique such as laser ablation or photo-imaging. A liquid metal...
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6888978 |
Electric-field actuated chromogenic materials based on molecules with a rotating middle segment for applications in photonic switching
A molecular system is provided for electric field activated switches, such as optical switches. The molecular system has an electric field induced band gap change that occurs via a molecular...
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6888976 |
Hitless tuning apparatus and methods for add/drop filters
Switch devices for hitless tuning or reconfiguring an add or drop WDM filter. The input light is switched from the filter (where the desired channel is passed and the express channels are...
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6885779 |
Phase modulator with terahertz optical bandwidth formed by multi-layered dielectric stack
An optical phase modulator includes a bandpass multilayer stack, formed by a plurality of dielectric layers, preferably of GaAs and AlAs, and having a transmission function related to the...
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6885789 |
Optical switch fabricated by a thin film process
An electro-optical switch is provided, that includes: a single mode optical waveguide having a thin ferroelectric oxide film for propagating a single mode of light; a coupler adjoining the single...
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6885790 |
Non-linear photonic switch
A photonic switch may be formed using one of a selected group of non-linear optical materials. Each of the materials within this group has a refractive index that demonstrates a substantial peak as...
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6882765 |
Connection protection between clients and optical cross-connect switches
The present invention provides methods, apparatus and systems for protecting connections between optical cross-connect switches and client equipment. A connection failure is detected, signaled, and...
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6882768 |
Optical spacer switch and insertion head, automatic insertion machine and method for inserting components on substrates by using the optical spacer switch
A confocal spacer switch for a fast, non-contacting determination of the spacing includes a point-shaped element that simultaneously transmits and receives light, imaging optics that form an image...
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6882770 |
Imaging technique for use with optical MEMS devices
An optical MEMS devices is imaged to a different location at which a second optical MEMS device is located in a manner that effectively combines the tilt angles of at least one micro mirror of each...
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6879745 |
Optical switch
An optical switch includes an input side switching element having a plurality of optical input ports and an output side switching element having a plurality of optical output ports. The input side...
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6879746 |
Miniature 2×2 magneto-optic switch
A magneto-optical switch includes a first birefringent crystal configured to receive a light beam, a first half-wave compensator plate pair configured to receive split light beams from the...
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6879754 |
Drop-before-add optical switching and routing system employing grating-based wavelength selective switches
The present invention discloses a drop-before-add optical routing and switching system. The drop-before-add optical routing and switching system includes an input waveguide for carrying a...
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6879747 |
Galvanometer mirror and optical switching device using the same
A mirror is fixed at the front of a mirror holder constituting a moving body. First and second coils are attached on the outer circumferential surface of the mirror holder at both sides of a plane...
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6876475 |
Dual modulator wavelength-selective switch and equalizer
One embodiment pertains to an apparatus for wavelength-selective switching and equalization of an incoming multiplexed signal having a plurality of wavelength components. The apparatus includes a...
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6876787 |
Device for transmitting an optical wave in a structure provided with an optical fiber and method for making same
A device for transmitting optical waves has a structure having at least an optical guide element wherein the structure comprises hollow parts or notches ( 9, 10 ) adapted to receive the end parts (...
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6873773 |
Method of cross-connecting optical fibers
A method of cross-connecting or reorganizing individual optical fibers of a plurality of fiber optic ribbons include the steps of providing a substrate having an adhesive thereon with a mixing zone...
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