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Match Document Document Title
7391561 Fiber- or rod-based optical source featuring a large-core, rare-earth-doped photonic-crystal device for generation of high-power pulsed radiation and method  
A method and apparatus use a photonic-crystal fiber having a very large core while maintaining a single transverse mode. In some fiber lasers and amplifiers having large cores problems exist...
7386209 Large mode area fibers using higher order modes  
The specification describes an optical fiber device wherein a LOM is converted to an HOM prior to entering the gain section. The gain section is a few mode fiber that supports the HOM. The output...
7373048 Polarization insensitive semiconductor optical amplifier  
A polarization insensitive semiconductor optical amplifier (SOA) is provided. The SOA includes an active waveguide, a passive waveguide, and a taper coupler for coupling optical energy from the...
7362496 Fiber gain medium and method of coupling pump energy into the same  
A fiber gain medium assembly is provided. The fiber gain medium assembly includes a fiber gain medium, which in turn, includes a longitudinally extending inner core. The fiber gain medium also...
7352949 Fiber used in wideband amplified spontaneous emission light source and the method of making the same  
The present invention relates to a fiber having a core of crystal fiber doped with chromium and a glass cladding. The fiber has a gain bandwidth of more than 300 nm including 1.3 mm to 1.6 mm in...
7333264 Photonic bandgap materials based on silicon  
Method of synthesis of photonic band gap (PBG) materials. The synthesis and characterization of high quality, very large scale, face centered cubic photonic band gap (PBG) materials consisting of...
7333263 Transition metal doped fiber amplifier  
An optical amplifier includes an optical fiber having a core doped with transition metal ions, and at least one glass cladding enclosing the core. By using the fiber, the optical amplifier of the...
7324721 Optical communication line with dispersion intrachannel nonlinearities management  
An optical communication line of a communication system has a first processing station and an amplifying station. The line has a first optical connection having at least partially compensated...
7321708 Optical fibre amplifier  
An optical amplifier is described that comprises at least two sections of amplifying optical fibre and pumping means for optically pumping the amplifying optical fibre. Optical fibre support means,...
7308182 Optical amplifiers  
An optical amplifier comprises a printed circuit board (PCB) having at least one support layer of electrically non-conducting material and at least one conductive layer of electrically conducting...
7298547 2-μm fiber amplified spontaneous emission (ASE) source  
A 2-μm fiber Amplified Spontaneous Emission (ASE) source provides a wide emission bandwidth and improved spectral stability/purity for a given output power. The fiber ASE source is formed from a...
7283714 Large mode area fiber for low-loss transmission and amplification of single mode lasers  
A large mode area optical fiber includes a large diameter core (d 1 up to 60 μm), and a first cladding (diameter d 2 ) wherein the difference between refractive index (n 1 ) in the core and the...
7283293 High efficiency optical amplifying fiber  
A small size and high efficiency laser oscillation apparatus capable of obtaining high output and high beam quality laser light is provided. First waveguide ( 21 ) (refractive index=n 1 ) for...
7280729 Semiconductor constructions and light-directing conduits  
The invention includes optical signal conduits having rare earth elements incorporated therein. The optical signal conduits can, for example, contain rare earth elements incorporated within a...
7277220 Ultraviolet laser apparatus and exposure apparatus using same  
A laser apparatus including a laser generating portion that generates pulse light having a single wavelength within a range from an infrared band to a visible band. An optical amplifier is...
7268942 Method of making a self-aligned light guide screen  
Provided is a method of making a self-aligned light guide screen. More specifically, in a particular embodiment, fabrication may commence by providing a first ribbon section of light guides with at...
7266259 Optical fiber microcoil, resonant structure and method of making the same  
An optical fiber coil of sub-micron diameter is shown to exhibit self-coupling between adjacent turns so as to form a three-dimensional optical resonator of relatively low loss and high Q. As long...
7259907 Laser-active optical fiber for a fiber laser or an optical fiber amplifier  
A laser-active optical fiber for a fiber laser or an optical fiber amplifier contains a laser-active fiber core ( 2 ) comprising an undoped inner region ( 22 ) which is surrounded by an outer...
7231104 Variable lightwave functional circuit and variable lightwave functional apparatus  
The system of a variable lightwave functional apparatus comprising: an optical amplifier for outputting wavelength multiplexed light containing a plurality of pulses having a first wavelength...
7231103 Variable lightwave functional circuit and variable lightwave functional apparatus  
The system of a variable lightwave functional apparatus comprising: an acousto-optical modulator for outputting wavelength multiplexed light containing a plurality of pulses having a first...
7215836 System for amplifying optical signals  
The invention is in the field of distributed Raman amplification for digital and analog transmission applications and other applications, e.g., instrumentation and imaging applications, including...
7209603 Acousto-optical device based on phonon-induced polaritonic band gaps  
The device comprises an optical waveguide and an acoustic wave generating device. The waveguide has an optical band gap and a sharp electronic transition (e.g. an excitonic transition) in the band...
7206486 Optical amplification fiber, optical fiber amplifier, and optical communication system  
An optical amplification fiber for an optical fiber amplifier that amplifies a signal light using a pumping light has an absorption coefficient that satisfies conditional relations αs≧2.0 dB/m...
7206478 Apparatus and method for monitoring optical network  
An apparatus for monitoring fiber-fault in an optical networks, such as a passive optical networks, suitable for monitoring at least one fiber path in connection. The apparatus includes at least...
7200291 Variable lightwave functional circuit and variable lightwave functional apparatus  
Disclosed is a variable lightwave functional circuit comprising: an applying unit for applying lateral pressure; a polarization maintaining optical fiber having a polarization axis, for inducing a...
7190872 Semiconductor optical amplifier and optical module using the same  
The present invention provides a polarization dependency-free, gain-saturated high function semiconductor optical amplifier and optical module at industrially low cost. The gist of the present...
7190511 Fiber laser system with increased optical damage threshold  
The invention describes techniques for the control of the spatial as well as spectral beam quality of multi-mode fiber amplification of high peak power pulses as well as using such a configuration...
7186033 Fiber optic booster connector  
An apparatus includes a housing, a first connection interface and an optical amplifier. The housing receives a fiber optic line and an electrical line. The first connection interface is located at...
7184206 Evanescent-field optical amplifiers and lasers  
An optical amplifier and a laser generator based on the fiber side-polished technology having a high pumping efficiency, a low noise figure and a small footprint are provided in this application....
7181119 Optically amplifying waveguide, optical amplifier module, and optical communication system  
An optically amplifying waveguide that can have a gain having a small wave-length dependency in a wavelength range shorter than the C-band, and the like. The optical amplifier module 1 optically...
7174108 Transmission device and repeater  
A transmission system is provided that recognizes occurrence of a fault efficiently so that the workability and quality of service can be improved. An optical amplifier part amplifies an optical...
7171091 Tuned cladding fiber amplifier and laser  
Single transverse mode fiber amplifier and laser operation is obtained with a multi-mode signal core surrounded by cladding containing irregular microstructuring that causes loss in all of the core...
7171074 Large mode area fibers using higher order modes  
The specification describes an optical fiber device wherein a LOM is converted to an HOM prior to entering the gain section. The gain section is a few mode fiber that supports the HOM. The output...
7167652 Optical 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...
7158698 Module for amplifying signal light with remote excitation-light and optical-fiber communication system including the same  
A module for amplifying a signal light with a remote excitation-light, includes (a) a first optical input/output line through which a signal light is transmitted, (b) a second optical input/output...
7154920 Broad-band variable-wavelength laser beam generator  
There is provided a broadly tunable laser beam generator serving as a laser beam source which utilizes a nonlinear optical effect of a silica (glass) fiber and which is broadly tunable in the...
7146071 Optical transmission system  
An optical transmission system which permits transmission distance to be prolonged without using repeaters and yet ensures economical, high-quality optical transmission. A branch station performs...
7142355 Ultra-low RIN fiber light source  
An ultra-low RIN band fiber light source is provided. In one embodiment, the fiber light source includes at least one segment of optical fiber, one or more pump lasers, at least two wavelength...
7139489 System and method of dispersion compensation in optical communication systems  
A method of compensating for chromatic dispersion in an optical signal transmitted on a long-haul terrestrial optical communication system including a plurality of spans, including: allowing...
7139480 System and method for power management in an optical network  
A method and system for multi-level power management in an optical network is provided. They include three levels of power management. The first level of power management dynamically changes...
7139453 Variable dispersion compensator utilizing wavelength conversion  
A dispersion compensator and method of dispersion compensation in which an input light is converted to a selected second wavelength, the converted light beam having the second wavelength is...
7136557 All optical chopping for shaping and reshaping apparatus and method  
The present invention relates to all optical choppers for shaping and reshaping. A chopper according to some embodiments of the invention may include a threshold device having an input terminal for...
7130495 Variable lightwave function circuit and variable lightwave function device  
Characteristics are rendered variable and high-functional by using the side-pressure inductive polarization mode coupling of a PMF to thereby change the position and magnitude of a side pressure....
7130110 Temperature control in an optical amplification system  
Systems and methods for controlling temperature in an optical amplification system are provided. An optical amplification system comprises a pump laser, a multiplexer, an optical fiber, a...
7127139 Optical multiplexing method and optical multiplexer, and optical amplifier using same  
An object of the invention is to provide an optical multiplexing method and an optical multiplexer, capable of fixing lights of different wavelengths at required wavelengths to stably multiplex...
7126745 Method of irradiating ultraviolet light onto an object  
A method of irradiating ultraviolet light onto an object. The method includes generating pulse light having a single wavelength within a range from 1.51 μm to 1.59 μm from a laser generating...
7120340 Single polarization optical fiber laser and amplifier  
An optically active linear single polarization device includes a linearly birefringent and linearly dichroic optical waveguide ( 30 ) for propagating light and having single polarization wavelength...
7119948 Optical amplifier apparatus and method  
An optical amplifier ( 200 ) splits an optical signal into two signals ( 210, 212 ). A first amplifier section ( 202 ) receives the first signal ( 210 ). The first amplifier section ( 202 )...
7119947 Dual-port broadband light source  
A dual-port broadband light source is disclosed. In the dual-port broadband light source, a first beam splitter splits a first ASE at a first ratio into the second and third light paths and outputs...
7116472 Rare-earth-doped optical fiber having core co-doped with fluorine  
A rare-earth-doped optical fiber comprises a silica core region doped with a rare earth element and a cladding region adjacent the core region, characterized in that the core region is also doped...
Matches 1 - 50 out of 393 1 2 3 4 5 6 7 8 >