Matches 1 - 50 out of 126 1 2 3 >
Match Document Document Title
7593610 Multi-mode optical coherence device and fabrication method thereof  
In an MMI device with which a plurality of narrow width single-mode waveguides are provided at both ends of a multimode waveguide M, and light introduced into one single-mode waveguide on the input...
7580600 Free space high power fiber coupler  
A waveguide receiving light which propagates through free space is configured with a coupler and delivery fiber. The coupler, including a GREEN or multimode fiber, has a protective coating and so...
7577325 Method of fabricating a polarization sorter  
A method of fabricating a passive polarization sorter includes the steps of providing first and second waveguides. The first waveguide has an input and an output. The first waveguide supporting at...
7519251 Optical fiber with mode sink  
The present invention concerns an optical fiber acting as a slab-coupled waveguide. The optical fiber has a cross-section comprising a core ( 1 ), which is two dimensional and responsible for the...
7502533 Mechanism for conditioning launched beams from an optical transmitter  
A system is disclosed. The system includes an optical waveguide; and an optical transmitter coupled to the optical waveguide. The transmitter includes a optical relay to condition a launch of an...
7499610 Method of using a polarization sorter  
A method of using a passive polarization sorter comprising the step of deploying a first waveguide and a second waveguide forming an adiabatic region along a portion of their length. Then, an input...
7457495 Method of filtering optical signals with a capillary waveguide tunable optical device  
A method of filtering optical signals ( 300 ) utilizing an optical fiber ( 100 A- 100 D). The method of filtering optical signals ( 300 ) includes the steps ( 304 ) selecting an optical fiber ( 100...
7440651 Single mode whispering-gallery-mode resonator  
Whispering-gallery-mode (WGM) resonators configured to support only a single whispering gallery mode.
7424193 Composite waveguide  
A composite waveguide comprising a central core and at least one side core helically wound about said central core and in optical proximity to said central core.
7415175 High bit rate optical communication over multimode fibers  
An optical communication system includes a transmitter that receives an input optical signal from an optical source and performs filtering so that an output signal from the transmitter includes a...
7403675 Method of high order mode excitation for multimode intrusion detection  
Intrusion detection for a multimode fiber optic cable uses a light signal launched into the fiber through the low ratio leg of a tap coupler to establish a narrow spectral width, under-filled...
7403674 Intrusion detection system for a multimode optical fiber using a bulk optical wavelength division multiplexer for maintaining modal power distribution  
Intrusion detection of one section only of a multimode fiber uses a light signal launched into the fiber at a location spaced from the source through a single mode fiber to establish a narrow...
7376293 Remote location of active section of fiber in a multimode intrusion detection system  
Intrusion detection of one section only of a multimode fiber uses a light signal launched into the fiber at a location spaced from the source through a single mode fiber to establish a narrow...
7373042 Polarization sorter  
A polarization sorter having an input, an output and a slowly varying region. The input has at least one input waveguide. The input waveguide supports at least one guided TE polarized mode of mode...
7366372 Waveguide device having improved spatial filter configurations  
An optical waveguide device is provided for receiving light that has a guided mode and an unguided mode. The device comprises an optically transmissive substrate having first and second...
7349596 System and method to remove light from cladding  
A system to remove cladding light from an optical fiber that includes a core and a cladding that surrounds the core. A volume of an index-matching material contacts an exterior surface of the...
7215846 Mode discriminating on-chip optical coupler for an optical receiver connected to dual mode/multimode fiber  
A mode coupler structure includes a discriminating structure that discriminates between various incoming modes from an input optical fiber structure. A waveguide structure is coupled to the...
7203411 Thermoopic type variable optical attenuator and array type variable optical attentuator using this  
A thermo optical type variable optical attenuator suitable for application in an array type variable optical attenuator that realizes low crosstalk between neighboring waveguides in the array is...
7194155 Adaptive control for mitigating interference in a multimode transmission medium  
Optical data is processed and transmitted in a multimode transmission medium in a manner that facilitates the mitigation of interference such as that often referred to as intersymbol interference...
7177490 Optical waveguide, optical device, and method of manufacturing optical waveguide  
An optical waveguide is formed on a substrate and includes a curved ridge structure, a curved optical path, and a buffer layer. The curved ridge structure is formed on the substrate so as to have a...
7174080 Guided wave spatial filter  
The invention concerns a guided wave spatial filter ( 300 ) for receiving input radiation and outputting corresponding filtered output radiation, the filter comprising first and second waveguide...
7146073 Fiber delivery system with enhanced passive fiber protection and active monitoring  
In an optical fiber system for delivering laser, a laser beam is focused onto an optical fiber at an injection port of the system. The end portions of the fiber have cladding treatments to...
7142748 Optical waveguide evanescent ribbon coupler  
An evanescent optically coupled electronic device including: a backplane wave guide or mother board including a set of parallel carriers that define a first plurality of parallel channels and...
7136550 Single-fiber launch/receive system for biosensing applications  
An interrogation system and method are described herein which use a single-fiber launch/receive system for interrogating a biosensor (optical sensor) to detect the occurrence of a bio-chemical...
7106929 Waveguide device  
Bent waveguide parts 131 and 132 on a substrate 121 of an arrayed waveguide chip 104 have a core dimension allowing multi-mode operation, but they are adapted to constitute higher order...
7095912 Technique for mitigation of polarization mode dispersion in fiber optic transmission links  
A technique for PMD mitigation in an optical communications system that utilizes a plurality of polarization rotators in an optical fiber to continuously rotate the polarization state of at least...
7092586 Intrusion detection system for use on an optical fiber using a translator of transmitted data for optimum monitoring conditions  
A method and system of intrusion detection system for a multimode fiber optic cable. A light signal is launched into the cable fiber to establish a narrow spectral width, under-filled non-uniform...
7054512 Optical waveguide, optical device, and method of manufacturing optical waveguide  
An optical waveguide is formed on a substrate and includes a curved ridge structure, a curved optical path, and a buffer layer. The curved ridge structure is formed on the substrate so as to have a...
6973232 Waveguide mode stripper for integrated optical components  
Through the introduction of an imaging multimode interference device in an integrated optical circuit, such performance degradations as lateral waveguide field oscillations and backreflections may...
6912342 Optical fiber module having reduced multi-path interference  
Disclosed is a fiber optic module containing one or more optical fibers having an attenuator formed in the output end of the fibers to filter out unwanted higher order modes. The optical fibers are...
6865316 System and method of operating low coupling efficiency optical source by dissipating cladding modes  
An embodiment is directed to a system for dissipating cladding modes of an optical fiber. In the system, a high power light source couples optical power into the optical fiber at a fiber coupling...
6859582 Dual-wavelength hybrid waveguide coupler  
A hybrid and tapered waveguide coupler that has two different single-mode waveguide sections for light at two different wavelengths to couple light at the two different wavelengths into or out of...
6850655 Optical apparatus with faraday rotator, static gain flattening filter and variable optical attenuator  
An optical apparatus for transmitting an optical signal includes a static filter, a Faraday rotator and a reflector. The Faraday rotator makes a first change in polarization of an optical signal in...
6845191 Optical filter for wavelength division multipled optical signals  
Methods for combining or splitting optical signals that include an odd channel set an even channel set. The methods of combining or splitting are performed by subjecting the odd and even channel...
6839484 Optical fiber for single-mode operation  
A single-mode fiber of increased core size consists of a “few-mode” fiber, of core size sufficient for guiding up to three high-order modes in addition to the fundamental mode, by interposing...
6839481 High-capacity multimode optical fiber systems  
Multimode optical fiber local area networks, both intrabuilding and interbuilding, are optimized to take advantage of the wide wavelength operating range offered by co-pending patent application...
6839473 Optical fiber cladding with low polarization dependence and an acousto-optic tunable filter with low polarization dependent loss achieved through thermal annealing  
This invention relates to a method of making optical fiber having low polarization dependence and an acousto-optical filter with low PDL. A section of the fiber is heated and then allowed to cool....
6836573 Directional coupler type optical modulator with traveling-wave electrode  
A directional coupler type optical modulator with traveling-wave electrodes includes a first directional coupler region, a waveguide wave coupling region, a second directional coupler region, and a...
6826327 Tunable narrow band optical filter  
A method, an apparatus and a system are described for receiving an optical signal in an optical filter and routing the optical signal through the optical filter multiple times.
6801686 Methods and apparatus for measuring the power spectrum of optical signals  
A method of measuring a power spectrum of an optical signal. The optical signal is transmitted through an optical fiber. A power of at least one wavelength of the optical signal is coupled from a...
6735351 Fast-adapting PMD compensator  
An amplifier system for satellites, in particulars for radio-frequency amplifier systems incorporating travelling wave tube amplifiers and used in space repeaters. The amplifier system includes two...
6707956 Apparatus for fabricating apodized fiber grating  
There is provided an apparatus for fabricating an apodized fiber grating. In the apodized fiber grating fabricating apparatus, a UV (Ultraviolet) laser emits a UV laser beam, a beam splitter splits...
6647159 Tension-tuned acousto-optic bandpass filter  
Device whereby one or more bands of optical wavelengths may be selected for further transmission. All light within the optical bandwidth of operation is first coupled from the core mode of an...
6640027 Gain flattening tunable filter  
An optical apparatus includes an optical fiber. A plurality of individual optical fiber deformation structures are positioned adjacent along a length of the optical fiber. Each of an individual...
6631224 Tunable filter with core mode blocker  
An optic apparatus includes an optical fiber with a cladding surrounding a core and a core-mode blocker included in at least a portion of an interactive region of the optical fiber. A mode coupler...
6625362 Dispersion compensating optical fiber  
The present invention aims at realizing a dispersion compensating optical fiber having a negative wavelength dispersion and a negative dispersion slope and exhibiting a large slope rate, and at...
6539148 Channel equalizer with acousto-optic variable attenuators  
An optical communication assembly includes a demultiplexer coupled to an input fiber, a multiplexer coupled to an output fiber and a plurality of optical fibers. Each optical fiber is coupled to...
6535665 Acousto-optic devices utilizing longitudinal acoustic waves  
An acousto-optic filter includes an optical fiber with a longitudinal axis, a core and a cladding in a surrounding relationship to the core. The optical fiber has multiple cladding modes. At least...
6532323 Acousto-optic filter  
An acousto-optic filter has a non-birefringent single mode optical fiber with a longitudinal axis, a core and a cladding in a surrounding relationship to the core. The optical fiber has multiple...
6522810 Optical loss filter  
The optical loss filter according to the present invention is configured such that a first long-period grating and a second long-period grating are formed in cascade on a unitary optical fiber...
Matches 1 - 50 out of 126 1 2 3 >