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7043121 |
Method and apparatus for writing apodized patterns
In some aspects, the invention relates to methods and systems for creating apodized periodic structures, such as apodized gratings in fibers. To create the periodic structures, a photosensitive...
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7043103 |
Self-healing fiber Bragg grating sensor system
The present invention is a self-healing fiber Bragg grating sensor system which comprises a central office, at least one network node, at least one 2×2 optical switch and at least one fiber Bragg...
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7043099 |
Device and system for phase conjugate conversion and wavelength conversion
The device according to the present invention relates to phase conjugate conversion and wavelength conversion. This device includes a polarization beam splitter and a polarization maintaining fiber...
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7042604 |
Self-aligning holographic optical system and related methods
Systems and methods for making a self-aligning optical system are provided, Briefly described, in architecture, one such system for making an optical system, among others, can be implemented as...
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7043122 |
PMD compensator based on separation of principal state of polarization control and differential group delay control, and method thereof
Provided are a polarization mode dispersion (PMD) compensator and method for automatically and rapidly compensating PMD occurring in an optical transmission fiber in a high-speed optical...
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7043110 |
Wavelength-selective switch and equalizer
One embodiment disclosed relates to a method for wavelength-selective switching and equalization. The method includes dispersing an incoming multiplexed signal into wavelength components, focusing...
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7039260 |
Method and apparatus for generating carrier suppressed optical pulse train and grating device
A method for generating an optical pulse train includes generating a source optical pulse train having a predetermined pulse period; optically combining a plurality of uniform pitch grating...
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7039324 |
Method, device, and system for regenerating optical signal
The present invention relates to a method for regenerating an optical signal suitable for WDM (wavelength division multiplexing). In this method, an optical signal is supplied to an optical...
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7034988 |
Wavelength conversion device
A feature of a wavelength conversion device of this invention is the board range of selection of wavelengths which can be obtained by conversion. A wavelength conversion device of this invention...
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7035507 |
Manufacturing method for optical element
A manufacturing method for an optical element includes providing a base member for an optical element and a cutting tool from which a blade tip part protrudes, forming an inspecting groove on a...
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7034935 |
High performance miniature spectrometer
An infrared spectrometer is described wherein a detector array is optically coupled to a slab waveguide structure. A focal plane is provided outside of the output face of the slab waveguide...
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7031568 |
Optical power monitor
An optical power monitor comprises: an array waveguide grating comprising first and second optical interaction regions between which an input optical signal propagates from a first position on a...
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7031570 |
Device and method of temperature compensating optical component
A device and a method of temperature compensating are disclosed. The device and method are employed for temperature compensation of a section of optical fiber. The device and method are useful for...
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7031571 |
Bragg grating and method of producing a Bragg grating using an ultrafast laser
A novel Bragg grating filter in optical waveguiding fiber with suppressed cladding mode coupling and method of producing same is disclosed. The novel grating structure is induced in both the core...
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7031572 |
Optical coupler
An optical coupler including a substrate, a diffractive optical element defined in the substrate, the diffractive optical element structured to receive incident light diverging from a first...
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7031613 |
Chromatic dispersion compensation by sub-band
End of line dispersion compensation is applied on a sub-band by sub-band basis. Adequate end-of-line dispersion compensation may be provided for high data rate WDM systems even for optical link...
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7031584 |
Method for manufacturing optical waveguide using laser direct writing method and optical waveguide manufactured by using the same
A method of manufacturing an optical waveguide using a laser direct writing method is disclosed. More particularly, a method for improving refractive index profile of the optical waveguide by...
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7031610 |
Diffraction-compensated integrated WDM
A diffraction-compensated WDM (wavelength division multiplexer) uses TTFs (thin film filters) as concave mirrors. The WDM has a plurality of filter elements for guiding the optical signal along a...
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7031569 |
Optical multi-demultiplexer
An arrayed-waveguide grating type optical multi-demultiplexer includes input waveguides, a first slab waveguide, a channel waveguide array, a second slab waveguide, and output waveguides. A pair of...
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7027703 |
Method for forming and apparatus comprising optical waveguides leading to a free space coupler region
A method for forming and apparatus comprising a free space coupler region having a plurality of optical waveguides coupled to the space coupler region at an interface region, the waveguides...
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7027699 |
Optical fiber and optical fiber sensors
An optical fiber device has at least two cores within the same cladding having different characteristics. The characteristics include including strain optic coefficient, thermo-optic coefficient,...
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7024076 |
Optical packet header identifier, optical router incorporating the same therein, and optical routing method using the router
An optical packet header identifier having a simplified configuration and being superior in reliability, stability, and economical efficiency, an optical router incorporating the identifier...
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7024075 |
Reducing insertion losses of a written in grating with mode coupling in the cladding
The invention relates to an optical fiber presenting a core, cladding, and a grating written by irradiation and coupling at least one light mode into the cladding so that it is dissipated therein....
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7024066 |
Littrow gratings as alignment structures for the wafer level testing of optical and optoelectronic chips
This application describes, among others, wafer designs, testing systems and techniques for wafer-level optical and optoelectronic testing by coupling probe light to/from the top of the wafer. In...
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7023562 |
Characterization of period variations in diffraction gratings
Methods and systems for interferometrically characterizing diffractive elements are disclosed.
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7020365 |
Resistive heater for thermo optic device
Resistive heaters formed in two mask counts on a surface of a grating of a thermo optic device thereby eliminating one mask count from prior art manufacturing methods. The resistive heater is...
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7018745 |
Controlled phase delay between beams for writing bragg gratings
A method of writing an extended grating structure in a photosensitive waveguide comprising the steps of utilizing at least two overlapping beams of light to form an interference pattern, moving the...
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7020366 |
Light emitting device, optical module, and grating chip
A light emitting device has a fiber stub component, a grating chip, a semiconductor optical amplifier, a photodiode, and a mount member. The fiber stub component is comprised of a ferrule and an...
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7020398 |
Dispersion slope equalizer
The object of the present invention is to provide a compact dispersion slope equalizer by which it is possible to simultaneously recover distorted waveforms of WDM signals by dispersion slope of...
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7018686 |
Switchable volume hologram materials and devices
A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance...
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7020358 |
Wavelength division demultiplexing apparatus
The invention provides a wavelength division demultiplexing apparatus which can reduce the connection loss between an input slab and channel waveguides and can suppress excitation of higher-order...
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7016569 |
Back-side-of-die, through-wafer guided-wave optical clock distribution networks, method of fabrication thereof, and uses thereof
Systems and methods for back-of-die, through-wafer guided-wave optical clock distribution systems (networks) are disclosed. A representative back-of-die, through-wafer guided-wave optical clock...
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7016571 |
Method and apparatus for a polarization insensitive arrayed waveguide grating (AWG)
An arrayed waveguide grating (AWG) comprises at least two free space regions, a plurality of grating arms extending between the two space regions, a passivation layer formed over the arrayed...
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7016568 |
Arrayed waveguide grating with increased uniformity of a performance parameter
An arrayed waveguide grating (AWG) device ( 1 ) comprising a substrate having a first array of waveguides ( 8 ) optically coupled between first and second slab couplers ( 3, 4 ) and a second array...
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7014369 |
Optical fiber connector
An optical fiber connector comprising a main body in the form of a manipulator 11 having a throughbore which removably receives a sleeve-like carrier 13 again having a throughbore. The carrier ...
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7016570 |
Optical signal processor
An optical signal processor comprises fiber collimators, a first diffraction grating device, a second diffraction grating device, a first half-wave plate, and a second half-wave plate. Each of the...
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7016589 |
Thermally-assisted photo-lithographic process using sol-gel derived glass and products made thereby
A photosensitive sol-gel film containing an organometallic photosensitizer is deposited on the oxide containing surface layer of a silicon substrate. A pattern of white or ultra violet light...
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7016567 |
System for higher-order dispersion compensation including a delay line
A higher-order dispersion compensator for tuning a polarization controlled signal having a first polarization mode dispersion component, a second order polarization mode dispersion component, and a...
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7013066 |
Tunable long period fiber grating structure and fabrication method
The invention discloses a tunable long period fiber grating structure and fabrication method, which produces an expected microbending deformation by adjusting the temperature and making use of the...
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7013063 |
System for higher-order dispersion compensation including phase modulation
A higher-order dispersion compensator including a chromatic dispersion compensator coupled to receive an input signal; a phase modulator optically coupled to the chromatic dispersion compensator,...
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7013058 |
Optical switch cascading system and method with fixed incidence angle correction
The present invention is an efficient system and method for cascading optical switches. A plurality of cascaded optical switches form a cascaded optical switch fabric and direct an optical signal...
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7013065 |
Planar optical apparatus for setting the chromatic dispersion in an optical system
A planar optical apparatus for setting the chromatic dispersion in an optical system, which apparatus has: a waveguide input structure with a first free-beam region, a first phase grating,...
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7013064 |
Freespace tunable optoelectronic device and method
A tunable optoelectronic device comprising: a resonant grating filter exhibiting at least one filtering characteristic as electromagnetic radiation impinges thereupon; at least one dielectric...
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7013062 |
Material for thermal compensation and optical communication device using the material
A material for temperature compensation consists of a sinter produced by baking any of crystalline powder, crystallized glass powder, and partially crystalline glass powder. The sinter has a...
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7009679 |
Chiral boardband tuning apparatus and method
A chiral structure having an expanded adjustable reflection band to provide broadband tunability is provided. In the preferred embodiment, the chiral structure is implemented as a chiral fiber...
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7010183 |
Surface plasmon devices
A device including an input port configured to receive an input signal is described. The device also includes an output port and a structure, which structure includes a tunneling junction connected...
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7009743 |
Optical processor
Method and apparatus are disclosed for optical packet decoding, waveform generation and wavelength multiplexing/demultiplexing using a programmed holographic structure. A configurable programmed...
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7010195 |
Fiber optic grating with tunable polarization dependent loss
A tunable polarization dependent loss element is formed of a fiber including a highly tilted optical grating. The grating is formed at an angle of approximately 45° so as to preferentially scatter...
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7010196 |
Method of forming laser induced grating pattern
A method of forming a laser-induced grating comprising the steps of providing a substrate with a polished surface having a plurality of reflective regions thereon, providing a pulsed layer beam and...
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7006730 |
Multichannel integrated tunable thermo-optic lens and dispersion compensator
A thermo-optic lens of the present invention includes a plurality of parallel heating elements having substantially constant center-to-center spacing and respective dimensions varying from the...
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