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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 385/24 - Plural (e.g., data bus)


Subclass of Class 385 - Optical waveguides
Definition: Subject matter wherein an optical waveguide is used as a
No. of patents: 3671
Last issue date: 05/08/2012


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NumberTitleIssue Date
7302128Fiber optic switch
A fiber optic switch uses induced periodic variations in a multi-mode optic fiber, to control power loss in the switch and power output. ...
11/27/2007
7302133Optical switch
There is provided an optical switch for reducing an apparatus size without making a structure for switching an output path complicated, wherein the first reflecting member and the micromirror array, which are optically coupled with the diffraction grating via the se...
11/27/2007
7302134Wavelength selective switch with a 2D arrangement of optical ports
A wavelength cross connect is provided in which wavelength channels are individually switchable from one of a first set of ports to one of a second set of ports. Add and drop capability is provided on the sets of ports. Some embodiments feature a single row of ports...
11/27/2007
7302194Optical filter and transmission system incorporating an optical filter
The present invention specially deals with a transmission system in which at least two coded optical signals are multiplexed and transmitted between an emitter and a receiver, a first of said coded signals providing a first spectrum having a first carrier wavelength...
11/27/2007
7302189Optical component provided with demultiplexing function and wavelength dispersion compensator
It is an object of the present invention to provide an optical component provided with a demultiplexing function capable of reducing an insertion loss and downsizing, and a wavelength dispersion compensator using such an optical component. In order to achieve the ob...
11/27/2007
7302185Device and method for millimeter wave detection and block conversion
The device includes a first fiber optic transmitter (FOT) to receive a millimeter wave (MMW) signal and to generate a multiple sideband optical signal, and a second FOT to generate a second optical signal, from a reference signal. A first wavelength division multipl...
11/27/2007
7302190Optical communication system including replaceable electro-optic and opto-electric converters
In an optical transmitting or receiving apparatus, a plurality of replaceable electro-optic converters or a plurality of replaceable opto-electric converters are provided in correspondence with optical transmission lines. ...
11/27/2007
7298936Facile production of optical communication assemblies and components
A modified fiber interlink forms an optical link between multiple channel waveguides to be mated. Multiple modified fiber interlinks can form optical paths between a multiple fibers and a multi-channel planar waveguide. Modified optical fibers are those fibers that ...
11/20/2007
7295330Film mapping system
A materials properties measuring system for using electromagnetic radiation interactions with selected materials positioned at a measuring location to determine selected properties thereof having an electromagnetic radiation source along with a plurality of radiatio...
11/13/2007
7295780Apparatus for detecting peaks of wavelength-division-multiplexed light, and apparatus for controlling said light
Disclosed is an apparatus for controlling wavelength-division-multiplexed light wherein overall power of wavelength-division-multiplexed light is rendered constant through control for uniformalizing the level of only one wave of maximum power, and wherein the levels...
11/13/2007
7295744Frequency-selective light coupler-decoupler device
A frequency-selective light coupler-decoupler device comprising a component of photonic crystal structure in which there is formed a waveguide having at least one longitudinal edge with a small number of rows of periodic elements of the photonic crystal so as to for...
11/13/2007
7295779Wavelength division-multiplexing optical transmission system
A wavelength division-multiplexing system is provided that uses wavelength grids in conformity with the ITU-T Recommendation G.692 and that is realizable at lower costs. In the system, the wavelengths of signal light beams transmitted from plural optical transmitter...
11/13/2007
7295738System and method for performing dispersion compensation
An exemplary embodiment of the present invention includes an optical circulator. The circulator may have, for example, a first port, a second port, and a third port. The first port may be configured to introduce light into the optical circulator. The system may also...
11/13/2007
7295584System and method for generating multi-wavelength laser source using highly nonlinear fiber
A number of embodiments provide multi-Wavelength Laser Source (MWLS) designs based on Super Continuum (SC) generation using Highly Non-Linear optical Fiber (HNLF). Advantageously, in some embodiments this technology only needs a single wavelength locking mechanism t...
11/13/2007
7295728Optical transmission system including dispersion slope compensation
A WDM optical transmission system and method uses slope compensation at the transmit terminal and/or the receive terminal. The system and method may be used with modulation formats with a short pulse width and a broad optical spectrum. ...
11/13/2007
7292785Optical transmission system constructing method and system
An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the op...
11/06/2007
7292786Method and system for a re-configurable optical multiplexer, de-multiplexer and optical add-drop multiplexer
A system for a re-configurable optical de-multiplexer, multiplexer or add/drop multiplexer is provided. A re-configurable de-multiplexer system comprises a wavelength selective switch having an input port, an output port and an internal port; a wavelength division d...
11/06/2007
7290943Modular laser package system and associated methods
A modular laser assembly has a laser-fiber housing comprising a semiconductor laser optically coupled to an end of an optical fiber, the laser-fiber housing having electrical leads electrically coupled to the laser and extending from a front face of the laser-fiber ...
11/06/2007
7292746All-optical flip-flop
The present invention provides a set-reset flip-flop operating in an all-optical manner. In this invention, a set pulse is inputted from the setting port. In doing so, only oscillation in set mode is generated at the multi-mode interference portion in a waveguide. A...
11/06/2007
7292787Selected-wavelength tuning filter and optical add/drop multiplexer
The present invention relates to the selected-wavelength tuning apparatus which is provided with an AOTF, a radio-frequency signal generator, an optical detector, and a controller for detecting lights emitted from the AOTF with the optical detector and for controlli...
11/06/2007
7292747Strictly non-blocking switch core having optimized switching architecture based on reciprocity conditions
A switch core is set forth that comprises a plurality of duplex switches that are interconnected with a interconnection fabric to implement, for example, strictly non-blocking operation of the switch core for reciprocal traffic. In one embodiment, an N-way reciproca...
11/06/2007
7292790Method and system for compensating residual dispersion curvature
A method and system for compensating residual dispersion curvature in an optical communication network is disclosed. One embodiment employs two types of dispersion compensating fiber to reduce higher order terms in a residual dispersion profile. The two types of dis...
11/06/2007
7292748Dispersion-compensating system
In the dispersion-compensating system of the present invention, a demultiplexer demultiplexes optical signals in a signal wavelength band of 1520 nm to 1620 nm propagating through a first common transmission line into C band (1520 nm to 1565 nm) and L band (1...
11/06/2007
7292750Signal processing system
A signal processing system (10) has a plurality of optical fibers (40, 42, 43) with their one ends (40) mounted in an array board (41) to receive electromagnetic radiation. A coupler (54) interconnects the other ends of the optical...
11/06/2007
7292749System for electromagnetic field conversion
A system is provided for conversion of a first electromagnetic field into a desired second electromagnetic field, for example for coupling modes between waveguides or into microstructured waveguides. The system includes a complex spatial electromagnetic field conver...
11/06/2007
7292758Optoelectronic fiber photodetector
The invention provides an optical fiber photodetector including a photoconductive element, such as a semiconducting element, having a fiber length. The semiconducting element is characterized as a non-composite material in at least one fiber direction. At least one ...
11/06/2007
7292754Compensating interferometer including delay lines with reduced noise
Methods and apparatus for reducing noise in optical apparatus comprising a delay line by utilizing a plurality of wavelength specific delay lines to delay an input waveform such as a pulse rather than a single delay line. In a preferred embodiment an apparatus is co...
11/06/2007
7289687Polarization-maintaining optical fiber
A polarization-maintaining optical fiber which exhibits an excellent polarization-maintaining performance and significantly low splice loss when spliced with a polarization-maintaining optical fiber having a cladding 125 μm in diameter even if the polarization-main...
10/30/2007
7289692Fiber optic circuit board link
A device for fiber optic free-space optical communication between electronic components, having no physical communication connection, in which terminal ends of optical fibers are aligned such that light emitting from the terminal end of one optical fiber is transmit...
10/30/2007
7289695Optical switching device and optical member unit
The present invention relates to an optical switching device capable of reducing the number of members such as a movable mirror for reflecting light beams to a relatively small number and suppressing the deterioration of the yield. The optical switching device is co...
10/30/2007
7289703Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus
The invention provides an optical modulator wherein appearance of radiation mode light can be suppressed to improve performances as a device. The optical modulator includes a multiplexing waveguide which in turn includes two input waveguides to which propagation lig...
10/30/2007
7289728Use of variable ratio couplers for network protection and recovery
The disclosure is directed toward an optical transmission system comprising a primary path disposed between a first end and a second end. The primary path is configured to transmit optical signals between the first end and the second end. A secondary path is dispose...
10/30/2007
7289732Broadcast/communication unified passive optical network system
Disclosed is a broadcast/communication unified passive optical network system. The network system comprises: an optical line termination that time-division multiplexes the received digital broadcast signals, receives communication signals through the internet, and w...
10/30/2007
7289733High reflection isolation optical devices and the method for making the same
New designs of optical devices, particularly for adding or dropping a selected wavelength or a group of wavelengths as well as multiplexing a plurality of signals into a multiplexed signal or demultiplexing a multiplexed signal into several signals are disclosed. Ac...
10/30/2007
7289740WDM regenerated transmission system
A multichannel wavelength-division multiplex fiber optic transmission system includes an optical transmitter and an optical receiver connected by an optical line including at least one optical fiber and at least one set of channel regenerators. Successive regenerato...
10/30/2007
7287913Connector port for network interface device
A connector port is adapted for a (NID) to receive a connectorized optical fiber from inside the NID and a pre-connectorized drop cable from outside the NID. An exterior connector port includes a base positioned within an opening defined by an external wall of the N...
10/30/2007
7289697Optical pulse shaper having hybrid planar lightwave circuit and free-space optics with MEMS piston-motion micromirrors and feedback control
An optical pulse shaper without polarization dependencies includes, a planar lightwave circuit (PLC) having an arrayed waveguide and free space optics, combined with a lens and micromirror array characterized by piston-motion. The micromirror array is coupled to a c...
10/30/2007
7286763Optical add/drop multiplexer having a banded channel configuration
An optical add/drop multiplexer (OADM) adapted to route optical signals having at least two different bit rates. The OADM has at least two sets of DWDM channels, e.g., with channels in a first set having a first bandwidth value suitable for the transmission of 10-Gb...
10/23/2007
7286283Optical fiber coupling arrangement
Apparatus for optically pumping a clad amplifier fiber includes one or more transmission fibers arranged and configured to insert pump-light from a pump light source such as a diode-laser into the cladding of the amplifier fiber. The pump light propagates through th...
10/23/2007
7286764Reconfigurable modulator-based optical add-and-drop multiplexer
An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat...
10/23/2007
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