This page is updated frequently with new Multimode Fiber-related patent applications.
|Multicore/multimode fiber coupling device|
A device for coupling a multicore/multimode fiber that can transmit a large quantity of information. This multicore/multimode fiber coupling device has a first fiber group (11), a first light converging system (13), a first mode converter (15), a second fiber group (21), a second light converging system (23), and light converging system (33) for multicore fibers.
Optoquest Co., Ltd
|Nxn parallel optical transceiver|
An n×n parallel optical transceiver includes a printed circuit board, a laser driving control chip, one or more lasers, two grin lenses, an optical band-pass filter, a multimode fiber array and a photodiode array. In the transmitter, laser beams of the same wavelength simultaneously output from the laser chip are first focused by the first grin lens, then the beams pass through a wavelength band-pass filter and are refocused by the second grin lens, and enter the channels in the multimode fiber array.
Source Photonics (chengdu) Co., Ltd.
An optical fiber comprises a glass fiber which comprises a core and a cladding, a primary resin coating layer which covers the periphery of the glass fiber, and a secondary resin coating layer which covers the periphery of the primary resin coating layer. The glass fiber is a multimode fiber having a core diameter of 40-60 μm and a cladding diameter of 90-110 μm, and the primary resin coating layer is a layer formed by curing a curable resin composition which comprises oligomers, monomers, and a reaction initiator, the curable resin composition containing a one-end-capped oligomer in an amount of 30% by mass or larger based on all the oligomers..
Sumitomo Electric Industries, Ltd.
|Inspection apparatus and method, lithographic apparatus, lithographic processing cell and device manufacturing method|
The present invention determines property of a target (30) on a substrate (w), such as a grating on a wafer. An inspection apparatus has an illumination source (702, 710) with two or more illumination beams (716, 716′, 716″, 716′″) in the pupil plane of a high numerical aperture objective lens (l3).
Asml Netherlands B.v.
|Multimode fiber for modulatable source|
Examples include generating a signal using a modulatable source. The signal may be propagated using a multi-mode fiber to receive the signal from the modulatable source.
Hewlett Packard Enterprise Development Lp
|Photonic chips based on multimode fiber-to-waveguide coupling|
Optical coupling designs are disclosed to provide a photonic device, for example, that includes a substrate; an optical waveguide formed on the substrate and configured as a multimode waveguide to support light in different optical waveguide modes; and an optical fiber structured as a multimode fiber to support light in different optical fiber modes, the optical fiber located above the optical waveguide and optically coupled to the optical waveguide via evanescent coupling to allow light to be coupled between the optical fiber and the optical waveguide.. .
|Fiber source with cascaded gain stages and/or multimode delivery fiber with low splice loss|
An apparatus includes an optical gain fiber having a core, a cladding surrounding the core, the core and cladding defining an optical gain fiber numerical aperture, and a multimode fiber having a core with a larger radius than a radius of the optical gain fiber core, a cladding surrounding the core, the core and cladding of the multimode fiber defining a multimode fiber stable numerical aperture that is larger than the optical gain fiber numerical aperture, the multimode fiber being optically coupled to the optical gain fiber so as to receive an optical beam propagating in the optical gain fiber and to stably propagate the received optical beam in the multimode fiber core with low optical loss associated with the optical coupling.. .
|Fiber coupling efficiency of diode lasers|
A system and method for increasing the fiber coupling efficiency of diode lasers is disclosed. The diode laser has a diode pump source for generating a force to pump a laser and a double clad fiber directly coupled to the diode pump source instead of coupling to the multimode fiber.
Bae Systems Information And Electronic Systems Integration Inc.
|Methods and measurement of modal characteristics of multimode fiber using rayleigh scatter|
One or more modal characteristics are determined for a waveguide that supports more than two modes. In an example implementation, optical frequency domain reflectometry (ofdr) is used to couple light into the waveguide and detect rayleigh scatter reflections associated with a segment of the waveguide.
Intuitive Surgical Operations Inc.
|A characterizing a multimode optical fiber link and corresponding methods of fabricating multimode optical fiber links and of selecting multimode optical fibers from a batch of multimode optical fibers|
The invention concerns a method of characterizing a multimode optical fiber link comprising a light source and a multimode fiber, which comprises: a step (170) of characterizing the multimode fiber using a measurement of the dispersion modal delay (dmd) and delivering fiber characteristic data; a step (171) of characterizing the light source by at least three source characteristic curves showing three parameters of the source as a function of a fiber radius r and obtained by a technique similar to the dmd measurement; a step (173) of computing an effective bandwidth (eb) of the link, comprising calculating (172) a transfer function using both the fiber characteristic data and each of said source characteristic curves.. .
Draka Comteq B.v.
Wireless distributed antenna mimo
The present disclosure relates to system applications of multicore optical fibers. One embodiment relates to a base transceiver station for a wireless telecommunication system comprising a plurality of antenna units arranged in a mimo configuration and adapted for transmission and/or reception of radio-frequency signals, an optical transmitter in the form of an electro-optic conversion unit for each of said plurality of antenna units, each electro-optic conversion unit adapted for converting an rf signal into an optical signal, a plurality of a single core optical fibers for guiding the optical signals, and at least one first space division multiplexing (sdm) unit adapted for multiplexing said single core optical fibers into respective individual cores of a multicore fiber, or into respective individual modes of a multimode fiber..
Moatless bend-optimized multimode fiber
An optical fiber including a multimode core having a radius, r1, and a maximum relative refractive index, α1max, at a wavelength λ0, an inner clad region surrounding the core and having a radial thickness, t2, and a minimum relative refractive index, Δ2min, of about 0.0% at a wavelength of λ0, and an outer clad layer, which is doped with chlorine at greater than or equal to 0.5 weight %, surrounding the inner clad region and having a radial thickness, t3, and a maximum relative refractive index, Δ3max, at a wavelength of λ0. The optical fiber satisfies the following relationship: Δ1max>Δ3max>Δ2min, and the optical fiber exhibits an overfilled bandwidth of greater than or equal to about 1.5 ghz-km at λ0..
Multimode optical fiber transmission system including single mode fiber
Some embodiments of the disclosure relate to an optical transmission system that operates at a wavelength in the range from 950 nm to 1600 nm and that employs a single-mode optical transmitter and an optical receiver optically coupled to respective ends of a multimode fiber designed for 850 nm multimode operation. The optical transmission system also employs at least one single mode fiber situated within the optical pathway between the optical transmitter and the receiver and coupled to the multimode fiber..
Multimode optical fiber and system including such
A multimode optical fiber comprising: a core with a diameter d40 and a refractive index profile configured to optimally transmit light at a wavelength λ1=850 nm and to propagate lp01 mode at another wavelength λo, where λo>950 nm, the multimode fiber has a lp01 mode field diameter lp01mfdmmλ0 and 8.5 μm<lp01mfdmmλ0<11 μm.. .
N-input receiver: rfog obi mitigation with retransmission
A multimode combiner or coupler (mmc) may combine the inputs into a larger core multimode fiber. The multimode combiner may be combined with a re-transmitting laser for detecting and re-transmitting signals.
Arris Enterprises, Inc.
Method and a photoacoustic probe using a multimode fiber
This invention is a method and apparatus to pick up a photoacoustic signal purely via optical means and via an endoscope. The photoacoustic endoscope invention relies only on optical excitation and detection methods.
Ecole Polytechnique Federale De Lausanne (epfl)
Broadband multi-mode optical fibers with flat-zone in dopant concentration profile
Described is a design approach to fabricating broadband graded-index multimode fibers where the concentration profile of at least one dopant in the core region includes at least one flat-zone. Designs for use in cwdm applications are also disclosed..
Ofs Fitel, Llc
Displays employing multimode optical fiber and low-speckle light sources
An apparatus comprising a visible light source(s), multimode optical fiber(s), light coupler(s), an optional spatial light modulator(s), and an optional projection lens(es). The light source has a 1/e half-width emission bandwidth.
Jgm Associates, Inc.
Method for brightness enhancement and modes manipulation of a multimode optical fiber
The invention relates to adaptive optics techniques applied to alter the modal structure of light propagating in an optical fiber. In particular the invention relates to altering the modal structure in a multimode beam propagating in a multimode fiber by lowering the number of higher modes.
Universal optical fibers for optical fiber connectors
An optical fiber for use as a stub fiber in an optical fiber connector is disclosed. The optical fiber is configured with a segmented core that includes a single-mode segment with a step-index profile and at least one multimode segment having at least one alpha profile.
Corning Cable Systems Llc
System for transmission over a multi-mode and/or multi-core optical fiber
A transmitter for an optical telecommunication system on a weakly multimode fiber is disclosed. One aspect is a transmitter including an encoder transforming each block of symbols to be transmitted into a code matrix, each element of the matrix being relative to a time of use and to a propagation mode of the weakly multimode fiber.
Method for single-fiber microscopy using intensity-pattern sampling and optimization-based reconstruction
A method for imaging an object with resolution that exceeds the number of spatial modes per polarization in a multimode fiber is disclosed. In some embodiments, the object is interrogated with a plurality of non-spot-sized intensity patterns and the optical power reflected by the object is detected for each intensity pattern.
Multimode fiber for modulatable source
A modulatable source is to generate a signal. A multi-mode fiber is to propagate the signal.
Distributed acoustic sensing with multimode fiber
A method and system for distributed acoustic sensing using multimode optical fibers.. .
Method for designing and selecting fiber for use with a transmitter optical subassembly
A method for compensating for both material or chromatic dispersion and modal dispersion effects in a multimode fiber transmission system is provided. The method includes, but is not limited to measuring a fiber-coupled spatial spectral distribution of the multimode fiber laser transmitter connected with a reference multimode fiber optical cable and determining the amount of chromatic dispersion and modal dispersion present in the reference multimode fiber optic cable.
Short pulse fiber laser for ltps crystallization
Laser pulses from pulsed fiber lasers are directed to an amorphous silicon layer to produce a polysilicon layer comprising a disordered arrangement of crystalline regions by repeated melting and recrystallization. Laser pulse durations of about 0.5 to 5 ns at wavelength range between about 500 nm and 1000 nm, at repetition rates of 10 khz to 10 mhz can be used.
Imaging distal end of multimode fiber
Where a multimode fiber is used for light delivery in a microscope system and a transverse distribution of light exiting a distal end of the fiber is substantially uniform, the distal end is imaged onto a plane of a sample to be probed by the microscope system, or at a conjugate plane. Alternatively, the distal end is imaged onto a plane sufficiently close to the sample plane or the conjugate plane such that a radiant intensity of light at the sample plane or the conjugate plane is substantially uniform.
Method of reducing the modal group delay in a multimode transmission system
Systems and methods for reducing modal group delay when transmitting a plurality of optical signals over a transmission line that supports a plurality of modes are disclosed. The modes are converted at a plurality of positions along the transmission line so the signals in the end have minimal group delay.
Low-speckle light sources and displays employing multimode optical fiber
An apparatus comprising a laser and/or led light source(s), multimode optical fiber(s), light coupler(s), an optional spatial light modulator(s), and an optional projection lens(es). The light source has a 1/e half-width emission bandwidth.
Multimode fiber for spatial scanning
A method for imaging a scan region by controlling at least one of the relative phase and relative amplitude of multiple optical modes propagating through a multimode optical fiber to control the position of an output beam emitted from the output facet of the optical fiber is disclosed.. .
Coherence gated doppler motion sensor and medical applications
A motion sensor applicable to medical procedures includes a source of light with a wavelength bandwidth and an optical detector. A first optical coupler terminates in a first probe tip and couples the light into the first probe tip.
Methods for making a graded-index multimode preform and fiber
Methods for making a preform for a graded-index multimode fiber by using an inside deposition process are disclosed. The methods are characterized by an iterative refractive index profile correction with the following steps: determining a target refractive index profile for the preform to be produced, carrying out an inside deposition process with fixed volume flows for the reacting gases inside a tube and a given burner speed for all deposited layers, collapsing the tube and measuring the actual refractive index profile, comparing the target profile with the actual profile and calculating a correction value of index differences, converting this correction value in corrected burner speeds as varying process parameter, carrying out a inside deposition process with fixed gas flows and corrected burner speeds for all layers to be deposited..
Generating broadband spectral power in multimode optical fibers
A broadband spectral power generator in a multimode optical fiber utilizes a standard multimode fiber that is coiled. A plate is placed on the coiled fiber and a force is applied to compresses the coiled fiber and thereby increase the interactions between the compressed windings and induce modal mixing and birefringence in the fiber.