Omniguide, Inc.

Omniguide Communications

Fitel Ush Corp.

Steven Alan Jacobs

Ori Weisberg

Yoel Fink

Burak Temelkuran

Tairan Wang

Uri Kolodny

Max Shurgalin

Robert Payne

Charalambos Anastassiou

Gil Shapira

David Torres

Gregor Dellemann

Steven G Johnson

Marin Soljacic

Maksim Skorobogatiy

Jesse Rusk

Mihai Ibanescu

Torkel Engeness

John Dimitris Joannopoulos

Gokhan Ulu

Ian A White

David Kalish

Siu-Ping Hong

Albert John Ritger

John D Joannopolous

James Goell

In general, in one aspect, the disclosure features a system that includes a flexible waveguide having a hollow core extending along a waveguide axis and a region surrounding the core, the region being configured to guide radiation from the COlaser along the waveguide axis from an input end to an output end of the waveguide. The system also includes a handpiece attached to the waveguide, wherein the handpiece allows an operator to control the orientation of the output end to direct the radiation to a target location of a patient and the handpiece includes a tip extending past the output end that provides a minimum standoff distance between the output end and the target location.

Medical system including a flexible waveguide mechanically coupled to an actuator

Photonic crystal fibers and medical systems including photonic crystal fibers

In general, in a first aspect, the invention features photonic crystal fibers that include a core extending along a waveguide axis, a confinement region extending along the waveguide axis surrounding the core, and a cladding extending along the waveguide axis surrounding the confinement region, wherein the cladding has an asymmetric cross-section.

Photonic crystal fibers having a preferred bending plane and systems that use such fibers

In general, in one aspect, the disclosure features a system that includes a flexible waveguide having a hollow core extending along a waveguide axis and a region surrounding the core, the region being configured to, guide radiation from the COlaser along the waveguide axis from an input end to an output end of the waveguide. The system also includes a handpiece attached to the waveguide, wherein the handpiece allows an operator to control the orientation of the output end to direct the radiation to a target location of a patient and the handpiece includes a tip extending past the output end that provides a minimum standoff distance between the output end and the target location.

An expeditious method for introducing geometric perturbations into lightguide during fabrication offers a perturbation stream of amplitude and periodicity&#x2014;constant or varying&#x2014;to satisfy a variety of needs.

Optical fiber fabrication and product

In general, in one aspect, the invention features apparatus that include an assembly including a radiation input port configured to receive radiation from a radiation source and an output port configured to couple the radiation to a photonic crystal fiber, the assembly further including a retardation element positioned to modify a polarization state of the radiation received from the radiation source before it is coupled to the photonic crystal fiber.

In general, in one aspect, the invention features methods that include directing radiation to a target location of a patient through a photonic crystal fiber, the photonic crystal fiber having a hollow core and flowing a fluid through the hollow core to the target location of the patient.

In general, in one aspect, the invention features an apparatus that includes a photonic crystal fiber configured to guide a mode of electromagnetic radiation at a wavelength, &#x3bb;, along a waveguide axis. The fiber includes a core extending along the waveguide axis, and a confinement region extending along the waveguide axis and surrounding the core. The confinement region includes alternating layers of a first and a second dielectric material having thicknesses dand dand different refractive indices nand n, respectively. The thickness of at least one of the alternating layers of the first material differs from thickness dor at least one of the alternating layers of the second material differs from thickness d, where dand dcorrespond to a quarter-wave condition for the two dielectric materials given by d=&#x3bb;/(4&#x221a;{square root over (n&#x2212;1)}) and d=&#x3bb;/(4&#x221a;{square root over (n&#x2212;1)}), respectively. The photonic crystal fiber has an attenuation for the guided mode at the wavelength &#x3bb; that is reduced by a factor of about two or more relative to an attenuation for a reference fiber that is identical to the photonic crystal fiber except that the reference fiber has alternating layer thicknesses corresponding to the quarter-wave condition.

Photonic crystal waveguides and systems using such waveguides

In general, in one aspect, the invention features systems, including a photonic crystal fiber including a core extending along a waveguide axis and a dielectric confinement region surrounding the core, the dielectric confinement region being configured to guide radiation along the waveguide axis from an input end to an output end of the photonic crystal fiber. The systems also includes a handpiece attached to the photonic crystal fiber, wherein the handpiece allows an operator to control the orientation of the output end to direct the radiation to a target location of a patient.

An optical waveguide including: a dielectric core region extending along a waveguide axis; and a dielectric confinement region surrounding the core about the waveguide axis, the confinement region comprising a photonic crystal structure having a photonic band gap, wherein during operation the confinement region guides EM radiation in at least a first range of frequencies to propagate along the waveguide axis, wherein the core has an average refractive index smaller than about 1.3 for a frequency in the first range of frequencies, and wherein the core a diameter in a range between about 4&#x3bb; and 80&#x3bb;, wherein &#x3bb; is a wavelength corresponding to a central frequency in the first frequency range.

Low-loss photonic crystal waveguide having large core radius

An optical waveguide having a working mode with a tailored dispersion profile, the waveguide including: (i) a dielectric confinement region surrounding a waveguide axis, the confinement region comprising a photonic crystal having at least one photonic bandgap, wherein during operation the confinement region guides EM radiation in a first range of frequencies to propagate along the waveguide axis; (ii) a dielectric core region extending along the waveguide axis and surrounded by the confinement region about the waveguide axis, wherein the core supports at least one guided mode in the first frequency range; and (iii) a dielectric dispersion tailoring region surrounded by the confinement region about the waveguide axis, wherein the dispersion tailoring region introduces one or more additional modes in the first range of frequencies that interact with the guided mode to produce the working mode.

Photonic crystal optical waveguides having tailored dispersion profiles

An optical waveguide including: a dielectric core region extending along a waveguide axis; and a dielectric confinement region surrounding the core about the waveguide axis, the confinement region comprising a photonic crystal structure having a photonic band gap, wherein during operation the confinement region guides EM radiation in at least a first range of frequencies to propagate along the waveguide axis, wherein the core has an average refractive index smaller than about 1.3 for a frequency in the first range of frequencies, and wherein the core a diameter in a range between about 4 &lgr; and 80 &lgr;, wherein &lgr; is a wavelength corresponding to a central frequency in the first frequency range.

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Needham, MA, United States of America

Steven Alan Jacobs