Matches 351 - 400 out of 575 < 1 2 3 4 5 6 7 8 9 10 11 12 >
Match Document Document Title
5879824 Magnetostatic wave device and material for the same  
A magnetostatic wave device comprising a magnetic garnet single crystalline film having a general formula of R 3 -x Ca x Ma 5 -2y+x Zr y Mb y -x O 12 wherein R is at least one of Y, La, Bi, Gd,...
5867615 Compact straight channel fiber optic intensity modular  
Two modes in the waveguide are excited by establishing the input light polarization at forty-five degrees so that the modes can be excited equally. After propagating through the waveguide, the two...
5848205 Polarization independent non-linear optical mirror  
The invention relates to a non-linear optical mirror comprising an optical fiber loop that operates independently of the polarizations of the signals of respective wavelengths λ s and λ c ...
5835642 Optical fiber interferometer and piezoelectric modulator  
The invention is related to technical physics, in particular to devices for investigating the internal structure of objects and can be used in medicine for diagnostics of human organs and systems,...
5835258 Device for amplification of amplitude modulation ratio of an optical beam  
The invention relates to a modulation ratio amplification device, particularly for amplification at UHF. This device comprises means for making two optical waves, which are of the same amplitude...
5822471 Differential optical modulator  
A differential optical modulator for modulating an optical beam with a forward propagating path includes a polarization component to polarize the optical beam and provide redirection of the optical...
5812707 Polarizer housing device for connecting a polarizer to an optical waveguide  
An apparatus, such as an optical modulator, which includes an optical waveguide and a polarizer housing device. The optical waveguide has an input end to receive light, and the polarizer housing...
5802222 Color image generation systems and applications  
Color image generation systems are disclosed for the reproduction of real or virtual, two-dimenional or three-dimensional, color, or monochrome images and their applications, in particular for...
5796880 Technique for modulating optical signals in optical communications  
In an optical transmitter, an input optical fiber delivers an optical signal to a fiber coupling modulator whose reflective surface is transformable in response to the data to be transmitted. In a...
5781327 Optically efficient high dynamic range electro-optic modulator  
An electro-optic modulator and a method for its use, in which an optical carrier is effectively suppressed for transmission of a radio-frequency (rf) modulating signal over an optical communication...
5778112 Waveguide polymer electro-optic modulator/switch  
An improved waveguide polymer electro-optic modulator/switch which is operated in a single mode and has an improved device characteristic compared to the optimized modulator/switch and is capable...
5771257 Light absorption modulator and integrated semiconductor laser and modulator  
A light absorption modulator includes a semiconductor substrate of a first conductivity type; a first cladding layer of the first conductivity type disposed on the substrate; an optical waveguide...
5768449 Optical transmission system and optical transmission method  
When an electric signal outputted from a signal source (101) is converted to a light signal in an electrica-optical converting portion (104), a distortion component such as secondary or tertiary...
5764842 Semiconductor guided-wave optical device and method of fabricating thereof  
After a shadow mask that is separate from a semiconductor substrate is used and is arranged over the semiconductor substrate via a wafer holder installed in a reaction chamber of a vapor-phase...
5764406 Hydrid optical amplifier having improved dynamic gain tilt  
A hybrid, erbium doped fiber amplifier device has a dynamic gain tilt that is less than the gain tilt of any of the constituent fibers. The hybrid amplifying device has at most one less pumping...
5757985 Semiconductor mach-zehnder-type optical modulator  
In a semiconductor Mach-Zehnder modulator, when a phase modulator portion 113 and other passive areas (incident light waveguide path 111, a branch portion 112, a joint portion 114 and an output...
5757984 Electro-optic optical modulating apparatus  
An electro-optic optical modulating apparatus comprises an optical waveguide, which has electro-optic effects, and at least a single pair of electrodes, which are located in the vicinity of the...
5757541 Method and apparatus for an optical fiber amplifier  
An amplifier method and apparatus for use with optic systems utilizing a fiber optic circulator to direct input signals to a splitter that splits the copropagating pump light and input signals into...
5745613 Wavelength-division multiplexing optical communication apparatus and method therefor  
A wavelength division-multiplexing optical communication apparatus and method includes a plurality of modulators for respectively modulating the intensity of a plurality of light rays, each having...
5739944 Support system for resonating element of phase modulator  
A phase modulator is provided with supports attached to the resonating element. The supports have a length which is an odd number of quarter wavelengths of a longitudinal acoustic wave excited in...
5732167 Optical fiber sensor for measuring a magnetic field or electric current and method for making the same  
An optical fiber sensor which is adapted for use in combination with a horseshoe-type iron core comprises a substrate having a groove pattern established by a pair of elongated spaced, parallel...
5729641 Optical device employing edge-coupled waveguide geometry  
An optical device for modulating or interacting with radiation guided and propagating along an optical longitudinal axis of an optical waveguide, such as, an optical fiber, has a different...
5724464 Compound optical waveguide device  
A compound optical waveguide device which is of a reduced size has an optical waveguide chip, a photodiode, and a laser diode. The optical waveguide chip has a substrate of LiNbO 3 , a Y-shaped...
5719971 Strain based optical fiber systems  
Optical systems use tuning of in-fiber gratings to provide an optical crossbar switch matrix of switch elements. The switch elements have a drop tap and an insert tap. A combination of the switch...
5703708 Adjustable optical delay line  
When merging optical pulse streams having a high bit rate, there is the problem that, for example given a bit rate of 40 Gbit/s, the pulses at the multiplexer output have 25 pulses temporal spacing...
5701378 Optical structures with two optical guidance paths  
An optical structure having two optical guidance paths between which coupling occurs in a band about one predetermined wavelength is manufactured by providing an optical structure having two...
5689362 Acousto-optic deflector device  
An acousto-optic deflector device having a piezoelectric thin film and IDT formed on a substrate for deflecting a light by causing an SAW generated at an SAW generator region to interact with the...
5682445 Strain based optical fiber devices  
Optical fiber devices include optical fibers having grating portions with in-fiber gratings having optical characteristics which are changed by the use of strain inducing members. The strain...
5671301 Optical phase modulator for high resolution phase measurements  
A pocket-type apparatus for non-invasive measurement of blood glucose concentration based on producing a polarized-modulated laser beam via an optical phase shifter (32), measuring a phase...
5652808 Acoustic-optical device for optical filtering  
An acoustic-optical device for optical filtering includes two successive acoustic-optical interaction segments separated by an intermediate polarizer and each modifying the polarization of light...
5644665 Multi-octave, high dynamic range operation of low-biased modulators by balanced detection  
An optical link is disclosed that is operated by a balanced detection technique so as to extend its linear dynamic range, yet substantially eliminate even-order harmonic distortion of the modulated...
5636054 Regulated optical amplifier having an optical circulator  
An optical amplifier of the type including an inlet for a light signal to be amplified and an outlet for an amplified light signal that has been amplified by means of an amplifying waveguide that...
5625722 Method and apparatus for generating data encoded pulses in return-to-zero format  
A method and apparatus for converting a non-return-to-zero (NRZ) voltage data stream into an optical data stream in return-to-zero (RZ) format, is disclosed comprising supplying a continuous...
5611005 High-speed polarization scrambler with adjustable chirp  
Two separate electrooptic phase modulators are used in a modified Mach-Zehnder interferometer to vary the absolute and relative optical phases of two orthogonally polarized modes of an input signal...
5604628 Optical laser amplifier combined with a spontaneous emission filter  
Optical laser amplifier devices are formed integrally with spontaneous emission filters. The filtering function is accomplished by a laser amplifier whose output is employed to quench the signal...
5601935 Surface magnetostatic wave device  
A surface magnetostatic wave device includes an Fe-containing garnet single crystal film grown on a gadolinium gallium garnet substrate. The crystallographic plane azimuth of the gadolinium gallium...
5596667 Application of phase conjugate optics to optical systems  
A phase conjugate light generation apparatus for various optical systems, wherein pump light and input signal light are supplied to a non-linear optical medium to generate output signal light and...
5596449 Light pulse generator  
A light pulse generator is disclosed comprising an optical loop, a pumped-light source, and an optical switch controller. The optical loop includes a light mixer, a light isolator, an erbium-doped...
5577139 Integrated-circuit optical network unit  
An optical network unit designed to be connected to incoming and outgoing fibers at a customer location is made in integrated-circuit form. One portion of the integrated circuit functions as an...
5568574 Modulator-based photonic chip-to-chip interconnections for dense three-dimensional multichip module integration  
Computation-intensive applications such as sensor signal processing, sensor fusion, image processing, feature identification, pattern recognition, and early vision place stringent requirements on...
5561732 Data transmission  
A device for data transmission by light has a waveguide doped with a fluorescent material. A light source is arranged to provide modulated light to enter the waveguide through an upper surface, the...
5548668 Velocity-matched electrodes for electro-optic travelling-wave modulators and method for forming the same  
Velocity-matched electrodes that are sufficiently index-matched to use in linearized directional-coupler modulators are provided by placing a low dielectric constant material layer over the...
5526448 Optical waveguide modulator having a reduced D.C. drift  
An optical waveguide device usable as an optical wave-modulator and having a reduced DC drift includes a LiNbO 3 substrate, an optical waveguide formed in a front surface portion of the substrate,...
5526449 Optoelectronic integrated circuits and method of fabricating and reducing losses using same  
An optical circuit and a method for substantially eliminating radiation losses associated with optical integrated circuits and, in particular, bends in optical waveguides, is disclosed. The circuit...
5522005 High power waveguide absorption modulator  
A waveguide type electro-absorptive optical modulator that resists damage to its input facet and methods for minimizing or eliminating optical and electrical damage to the input facet of waveguide...
5515199 Optical system employing near-incoherent processing for distortion correction  
A system for correcting nonlinear distortion in fiber optic systems including communication systems by means of light modulation provided by interferometric modulators such as the Mach-Zehnder. The...
5509098 Optical transmission line and a method of forming thereof  
In this invention, an optical analog signal obtained such that light having a wavelength λ1 is intensity-modulated or frequency-modulated with a modulation index m per channel and a chirping...
5506919 Conductive membrane optical modulator  
An optical waveguide modulator for modulating an optical beam is described. The modulator includes a substrate and a waveguide formed in or on the substrate. A plurality of conductive membranes...
5502779 Integrated optical modulator and waveguide and method  
An optical waveguide (20) is comprised of a core layer (20) fabricated on an interference layer (18). The interference layer (18) is supported by a lower cladding layer (16) deposited on a...
5502782 Focused acoustic wave fiber optic reflection modulator  
An improved optical fiber modulator producing a focused acoustic wave propagating from an acoustic transducer surrounding an optical fiber having an in-fiber reflection grating changes the core...
Matches 351 - 400 out of 575 < 1 2 3 4 5 6 7 8 9 10 11 12 >