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Patent No. 6049912

Mountable Printable Placard With Headband

A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.

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Class 385/16 - Switch (i.e., switching from one terminal to another, not modulation)


Subclass of Class 385 - Optical waveguides
Definition: Subject matter wherein the output of an optical waveguide
No. of patents: 2436
Last issue date: 05/29/2012


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NumberTitleIssue Date
8189969Trustworthy optomechanical switch
A switch having two apertured plates one of which is movable relative to the other to occupy spaced switch positions, the apertures being arranged in the plates so that in each switch position two or more pairs of apertures are aligned and all others are masked, whe...
05/29/2012
8184932Method of fabricating an optical switch
A method fabricates an optical switch comprising a microsphere coated with silicon nanocrystals. The method includes providing a silica optical fiber. The method further includes melting at least a portion of the fiber to form at least one silica microsphere. The me...
05/22/2012
8036502Stress free mounting of optical bench for WSS
An optical bench in a wavelength selective switch (WSS) is mounted using a combination of fixed mounts and stress-free mounts. The WSS is packaged in an enclosure including a base, a sidewall, and a lid. The optical switching engine is attached directly to the base....
10/11/2011
8031990Plasmon multiplexing
A variety of structures, methods, systems, and configurations can support plasmons for multiplexing. ...
10/04/2011
8009943Magnetically activated photonic switches and switch fabrics employing the same
Various embodiments of the present invention are directed to photonic switches and switch fabrics employing the photonic switches. In one embodiment of the present invention, a photonic switch comprises a first waveguide disposed on a surface of a substrate in proxi...
08/30/2011
7885494Optical signaling for a package-on-package stack
A package-on-package stack may include an upper package, an optical interface, and a lower package. The upper package may send an optical signal from a first component in the upper package. The optical interface may receive the optical signal from the upper package,...
02/08/2011
7860358Multimode interference waveguide type optical switch
It is an object of the present invention to provide a multimode interference waveguide type optical switch that has a wide tolerance and that digitally performs switching with respect to a change in an applied voltage or injected current. The multimode interference ...
12/28/2010
7848600Driving circuit of optical gate switch
A driving circuit of a semiconductor optical amplifier type gate switch constituting a matrix optical switch is provided with an operation amplifier into which a driving signal is input and from which a current corresponding to the driving signal is output, an induc...
12/07/2010
7826696Optical deflection method and optical deflection apparatus
An optical deflection apparatus includes a signal light source configured to emit signal light having one or more wavelengths, a control light source configured to emit control light having a wavelength different from the wavelength of the signal light, a thermal le...
11/02/2010
7813600Mechanical optical switch
A mechanical fiber optic switch, which includes a base structure and a plurality of first optical fibers, mounted on the base structure. The first optical fibers are arranged such that their ends define a curved cylinder surface. The switch also includes a plurality...
10/12/2010
7805032Remote monitoring of undersea cable systems
A method and system are provided for remotely monitoring undersea cable systems. Upon receiving a fault alert message, an optical cross-connect is set up between the subject cable station and a testing platform. Testing is conducted and a determination is made wheth...
09/28/2010
7796847Electrical stimuli of MEMS devices
Methods for applying electrical stimuli to optical micro-electro-mechanical system (MEMS) devices are disclosed. Electrical stimuli may be applied to one or more released current carrying elements mounted above a supporting substrate biased to minimize electrostatic...
09/14/2010
7792398Optically controlled optical-path-switching-type data distribution apparatus and distribution method
Data to be sent are, in a data communication unit, first divided into electric signal packets by a data transmission/receipt control unit, whereby an electric signal sequence tag is added to each electric signal packet, then converted into optical packets by an opti...
09/07/2010
7787720Wavelength selective reconfigurable optical cross-connect
An optical coupling device including: at least a first input port for delivering an optical input signal beam that includes a plurality of wavelength channels; at least a first optical output port for receiving an optical output signal beam; a wavelength dispersion ...
08/31/2010
7706642Methods and devices for moving optical beams
A method and device for moving optical beams including a conduit and an attached, independently movable structure that moves the conduit with up to 6 degrees of freedom both controlled and restricted as required. This structure may include a conductor positioned by ...
04/27/2010
7697801Wavelength selective switch
A spectrally selective optical switch is disclosed. The switch comprises a first and a second optical waveguide each having a light guiding structure arranged to guide light along a predetermined path, the optical waveguides being arranged adjacent and parallel to e...
04/13/2010
7697802Optical bypass method and architecture
This invention pertains to optical fiber transmission networks, and is particularly relevant to transmission of high volume of data and voice traffic among different locations. In particular, the improvement teaches improvements to an optical transport system to all...
04/13/2010
7684664Microresonator optical switch
An optical switch includes a microresonator comprising a plurality of nanoparticles. The microresonator is configured to receive signal light having a signal wavelength and to receive a pump pulse having a pump wavelength. At least a portion of the microresonator is...
03/23/2010
7639905Channel switching system and method of IPTV service in passive optical network
Channel switching system and method of an IPTV service in a passive optical network (PON) are disclosed. To reduce a channel switching time of an IPTV system in the passive optical network, the system and the method use a channel switching control module and a chann...
12/29/2009
7630597Master/slave multiple path optical switching device
A system and method is provided for controlling switching between multiple primary and diverse optical paths in an optical switching system. The system has a primary upstream optical path, a diverse upstream optical path, one or more primary downstream optical paths...
12/08/2009
7627206Plasmon multiplexing
A variety of structures, methods, systems, and configurations can support plasmons for multiplexing. ...
12/01/2009
7620273Methods and devices for providing optical, serviced-enabled cross-connections
A technique for improving optical cross-connections comprises placing a switch in front of a number of processing units. So configured, the units are no longer dedicated to a specific link or signal. When necessary, a unit is connected/disconnected to one or more op...
11/17/2009
7620274Optical protection switch and method for optical protection switching
An optical protection switch and a method for optical protection switching are provided. The optical protection switch includes a loop mirror-based optical switch with two circulators and a direction-dependent phase shifter in the loop mirror. The direction-dependen...
11/17/2009
7606450Light activated optical switch that includes a piezoelectric element and a conductive layer
A light activated optical switch includes at least one conductive layer located adjacent to a piezoelectric element to enhance the electrical field that is applied to the piezoelectric element in response to an activation light. The conductive layer has free electro...
10/20/2009
7606449Adaptive switch contamination compensation
In a method and system for compensating for contamination of a switch or of a load circuit connected to the switch in a switch circuit, on/off signal levels are obtained corresponding to on/off states of said switch based on a polling signal which turns said switch ...
10/20/2009
7603006Optical switch having angle tuning elements and multiple-fiber collimators
An optical switch with a compact form factor includes a multiple-fiber collimator and an angle tuning element for deflecting an optical beam from an input fiber into one of at least two output fibers. The angle tuning element may be provided between a pair of coaxia...
10/13/2009
7580598Optical signal processing device, information recording/reproducing apparatus and information recording/reproducing system
Optical signal processing device that processes an optical signal based on predetermined data has a first terminal for inputting and outputting the optical signal, which is connected to a first channel of optical communication line, a second terminal for inputting a...
08/25/2009
7570847Method of forming an optical switch
A method of forming an optical switch is disclosed. The optical switch is implemented with one or more cantilevered optical channels, which are formed in a flexible waveguide structure, and an actuator which is connected to the cantilevered optical channels, to posi...
08/04/2009
7565044Optical module method of manufacturing the same
An optical module with a first optical waveguide substrate having end faces; a second optical waveguide substrate which includes a first optical waveguide, a second optical waveguide, and end faces, the second optical waveguide substrate having an opening between th...
07/21/2009
7561766Thin film interleaver
A thin film interleaver device is disclosed. The thin film interleaver includes thin film optics. The thin film(s) are formed such that they reflect one group of wavelengths while allowing a second group of wavelengths to pass through the thin film(s). The thin film...
07/14/2009
7558447Single-pole optical wavelength selector
A single-pole, wavelength selective switch in which the input optical signal is converted to a light beam having a defined polarization, such as S-polarization, with respect to the system plane. The beam is laterally expanded in the system plane, and then spatially ...
07/07/2009
7555177All fiber magneto-optic on-off switch for networking applications
A fiber optic switch based on the magneto-optic effect of magnetic materials is presented. Due to the optical fiber based construction of the switching device it is suitable for optical fiber networks The on-off function of the switch is useful for isolation and con...
06/30/2009
7551813Simplified fiber-optic switch for all-optical fiber-optic lines
Simplified and insensitive to ambient condition mechanical bi-directional fiber-optic switch that can work in fire and explosion hazardous environment. The switch houses a sensitive element—a length of single-mode optic fiber and a bending device, which being acti...
06/23/2009
7542633Plasmon gate
A variety of structures, methods, systems, and configurations can support plasmons for logic. ...
06/02/2009
7536067Photonic integrated circuit device and elements thereof
A photonic integrated circuit (PIC) device is described. The PIC device includes a set of optical transceivers including optical transmitters and optical receivers, and an embedded optical interconnect mesh operatively associated with the set of optical transceivers...
05/19/2009
7532787Continuous optical null tracking method for optical switch
A method and apparatus are provided for real-time correction of a voltage drift of an optical switch. The correction may be made without interrupting an optical data stream of the optical switch. Three voltage states of the optical switch may be monitored continuous...
05/12/2009
7529441Wavelength routing optical switch
An optical switch for routing arbitrary wavelengths between optical fibers in optical networks. The optical switch may include a highly wavelength dispersive element together with a spatially dispersive element to separate the wavelengths. Broadband switch inputs an...
05/05/2009
7519247Wavelength selective optical switch
A wavelength selective optical switch particularly usable as a programmable N×M optical switch in a multi-wavelength communication system. The switch uses a grating that separates multi-channel optical signals into a plurality of optical channels, and combines a pl...
04/14/2009
7499608Apparatus 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 birefringent wedge is associated with the at least one polarization switch. The ...
03/03/2009
7496252Optical switch fabric with redundancy
An optical switch fabric with an input stage, an output stage, and a center stage coupled in a cascaded manner. The center stage includes (1) a minimum number of center switches greater than one that cause the optical switch fabric to be strict-sense nonblocking and...
02/24/2009
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