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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...
7167300 Modular, high energy, widely-tunable ultrafast fiber source  
A modular, compact and widely tunable laser system for the efficient generation of high peak and high average power ultrashort pulses. Modularity is ensured by the implementation of interchangeable...
7158728 Optical repeating system and optical amplifying repeater control method  
An optical repeating system includes an optical transmitter and a plurality of optical amplifying repeaters. The optical transmitter specifies a part or all of the optical amplifying repeaters, and...
7158287 Distributed and discrete amplification of optical signals  
An optical amplifier system is disclosed comprising a discrete amplifier system and a distributed amplifier system. The discrete amplifier system receives optical signals and amplifies the optical...
7154664 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Apparatus and method for amplification medium performance simulation, and optical amplifier  
An amplification medium simulation apparatus comprises a basic data retaining unit 21 , an input signal beam information retaining unit 22 , and a simulation executing unit 31 approximating and...
7151631 Method for modeling optical fiber amplifiers  
The present invention provides a method of modeling an optical fiber amplifier, the method being characterized in that it comprises the steps consisting in: establishing ( 100 ) the speed...
7151630 Raman amplification repeater  
A repeater according to the present invention includes a plurality of excitation light sources with varying center wavelengths for use as an excitation light source to achieve Raman amplification;...
7146079 Dynamic gain equalizer  
The dynamic gain equalizer for flattening a gain profile of an optical amplifier includes: an optical waveguide circuit having multistage optical couplers, demultiplexing and multiplexing, each...
7145716 Multiple stage Raman optical amplifier  
A multiple stage Raman amplifier includes an interstage wavelength-selective pump combiner. Wavelength-selection characteristics are such that the pump combiner substantially blocks the passage of...
7142782 Noise light elimination method, noise light elimination apparatus and optical transmission system, using stimulated brillouin scattering  
The invention is aimed at providing a simple noise light elimination technique capable of eliminating noise light components contained in a signal light, together with wavelength components same as...
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...
7139119 Fiber amplifier with suppression of amplified spontaneous emission  
A fiber amplifier module for amplifying a signal pulse includes an optically pumped double-pass fiber amplifier in which a fiber Bragg grating reflects an amplified pulse in between the first and...
7139118 Optical amplifiers  
A multistage optical amplifier is controlled to compensate for the effect of amplified spontaneous emission (ASE) by a method comprising the following steps. Optical input and output signals to a...
7136219 Optical amplifier using delayed phase matching fiber  
The present invention has an object to provide an optical amplifier capable of realizing a good response characteristic in a wide frequency band, even when a population inversion state is formed by...
7133202 Method and system for flexible and cost effective dynamic tilt gain equalizer  
Method and system for flattening tilt gain with a digital title gain equalizer (“DTGE”) constructed with a linear tilt optical filter (“LTOF”). In a first embodiment, a DTGE flattens tilt...
7133196 Erbium doped fiber amplifier for reducing transient phenomena of OSNR and BER in dynamic WDM system and amplifying method thereof  
Provided is an erbium-doped fiber amplifier reducing transient phenomena of a signal-to-noise ratio and a bit error rate in a dynamic wavelength division multiplexing system and an amplifying...
7133195 Gain-clamped fiber amplifier  
Provided is a gain-clamped fiber amplifier for amplifying the magnitude of an input optical signal in an optical communication system. The gain-clamped fiber amplifier includes a first amplifier...
7133194 Wavelength tunable light source integrated with optical amplifier, beam steering unit, and concave diffraction grating  
Provided is a wavelength tunable light source that can electrically tune wavelengths by monolithically integrating an optical amplifier, a beam steering unit, and a concave diffraction grating on a...
7130546 Optical receiver  
An optical receiver controls the amplitude of a light signal at a constant level so as to be constant for improvements in the quality of signal regeneration and reliability. A modulation part...
7130544 Optical repeating system and optical amplifying repeater control method  
An optical repeating system includes an optical transmitter and an optical amplifying repeater. The optical transmitter transmits a supervisory command and a control command to the optical...
7130113 Passive phasing of fiber amplifiers  
A method passively locks and phases an array of fiber amplifiers in a fiber amplifier system that emits a beam, such as a laser beam. The method locks the fiber amplifiers so that the fiber...
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...
7130109 Optical signal amplification device  
An optical signal amplification device for outputting an output signal light which has the same wavelength as an input signal light and an intensity variation identical in phase with an intensity...
7123634 Zig-zag laser amplifier with polarization controlled reflectors  
A solid state zig-zag slab laser amplifier in which depolarization occurring at total internal reflection from opposed lateral faces of the amplifier slab is controlled by selecting a complex...
7123404 Optical amplifier and optical amplification method  
An optical amplifier includes an output unit that outputs a loss monitoring light having a wavelength that causes neither absorption nor gain with respect to each of the wavelengths of a light...
7123403 Optical signal-to-noise ratio improving device  
An optical signal processing method is disclosed that enables improvements of a signal to noise ratio of an optical signal and reduction of size and power of an optical signal processing device....
7119950 Amplification method and optical amplifier for wavelength division multiplexed signal light  
In an optical amplifier of the invention, a WDM signal light is separated into N components by a demultiplexer after which each component is amplified by N optical amplifier sections, and the...
7116908 Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio  
In the WDM systems, the OSNR and the signal loss among the optical signals are substantially minimized at the receiving terminal to combat the SRS effects. An equal amount of the signal loss is...
7116470 Raman amplifying device and method for pump modulation  
The invention is dealing with a Raman amplifying device comprising an optical path, pump sources for generating a plurality of Raman pump signals and means for coupling the plurality of Raman pump...
7113709 Redundant WDM transmission system optical receiver with reduced variable optical attenuators and/or variable dispersion compensation modules  
An optical receiver including a variable optical attenuator for controlling an optical loss value for each optical transmission line based on a predetermined optical loss value; a variable...
7113327 High power fiber chirped pulse amplification system utilizing telecom-type components  
An erbium fiber (or erbium-ytterbium) based chirped pulse amplification system is illustrated. The use of fiber amplifiers operating in the telecommunications window enables the implementation of...
7110169 Integrated optical device including a vertical lasing semiconductor optical amplifier  
An intergrated optical device comprises a vertically lasing semiconductor optical amplifier (VLSOA) and an optical element integrated onto a common substrate. Example optical elements include...
7106501 Fiber amplifier with suppression of amplified spontaneous emission  
A fiber amplifier module for amplifying a signal pulse includes an optically pumped double-pass fiber amplifier in which a fiber Bragg grating reflects an amplified pulse in between the first and...
7103276 Optical band scanning monitor system and method  
A scanning optical monitoring system and method are appropriate for high speed scanning of a WDM signal band. The system and method are able to identify dropped channels or, more generally,...
7102812 Devices and methods for raman amplification and dispersion compensation  
The present invention provides devices and methods for Raman amplification and dispersion compensation. According to one embodiment of the present invention, a dispersion compensating device...
7099595 Optical wavelength multiplexing transmission apparatus and optical output control method for optical wavelength multiplexing transmission apparatus  
The present invention provides an optical wavelength multiplexing transmission apparatus and an optical output control method for an optical wavelength multiplexing transmission apparatus in an...
7092636 Optical network employing erbium-doped fiber amplifiers  
A point-to-multipoint bi-directional wide area telecommunications network employing atmospheric optical communication. The network comprises a primary transceiver unit, a plurality of subscriber...
7092148 Optical communication system having dynamic gain equalization  
An optical communication device, and related method, are provided for reducing ripple in WDM systems. In particular, the optical communication device includes a dynamic gain equalization (DGE)...
7088743 Laser source comprising amplifier and adaptive wavefront/polarization driver  
A hybrid laser source including a solid state laser driven by an array of fiber laser amplifiers, the inputs of which are controllable in phase and polarization, to compensate for distortions that...
7088502 Semiconductor optical amplifier and optical amplifying apparatus using the same  
A semiconductor optical amplifier for amplifying input optical signals is disclosed. The optical amplifier includes a substrate; a first active layer laminated on the substrate for generating...
7088498 Optical amplification of CWDM channels using optical amplifiers having fluoride-based optical fiber  
An optical amplifier system and method are disclosed for amplifying CWDM channels. The optical amplifier system includes a first optical amplifier that includes a fluoride-based optical fiber of a...
7088497 Optical device with polarization diversity module  
In one embodiment, an optical device includes a polarization diversity module configured to receive an optical input signal and output a first optical output signal and a second optical output...
7088496 Method for controlling a pump unit while optically amplifying a transmitted wavelength multiplex (WDM) signal  
The invention relates to a novel method for controlling a pump unit of a fiber amplifier, with which a transmitted wavelength multiplex (WDM) signal is amplified by at least a distribution of...
7085496 Passive add/drop amplifier for optical networks and method  
An add/drop node for an optical network comprises a passive splitter to split an ingress signal from the network into a first ingress signal and a second ingress signal. A first amplified splitter...
7085043 Optical amplifier  
An optical amplifier of the invention comprises first and second optical amplification sections connected in a cascade manner between an input terminal and an output terminal. Optical isolators...
7085039 Hybrid Raman/erbium-doped fiber amplifier and transmission system with dispersion map  
A hybrid Raman-EDFA provides gain equalization over the C-band and L-band. The hybrid Raman-EDFA includes a Raman section producing a Raman gain and an EDFA section producing an EDFA gain...
7081988 Optical amplifier, communication system and method for control tilt of a communication system  
The invention discloses an optical amplifier ( 18 ) that amplifies signal light in a signal band in a fiber optic transmission system ( 10 ) having at least first and second optically pumped signal...
7081987 Coordinated control of dynamic gain equalization in a wavelength division multiplexed optical system  
A coordinated method is provided for controlling dynamic gain equalization in an optical transport network. The method includes: detecting a deviation in optical power of an optical signal...
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