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Dmitri M Iazikov

from Veneta, OR
Age ~53

Dmitri Iazikov Phones & Addresses

  • 86242 Smigley Rd, Veneta, OR 97487
  • 91837 Marcola Rd, Springfield, OR 97478 (541) 933-2556
  • Eugene, OR
  • Lime, OR

Work

Company: Lightsmyth Position: Sr. scientist

Education

School / High School: Moscow Institute of Physics and Technology (State University) (MIPT) 1987 to 1993

Industries

Defense & Space

Resumes

Resumes

Dmitri Iazikov Photo 1

Sr. Scientist At Lightsmyth

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Position:
Sr. Scientist at LightSmyth
Location:
Eugene, Oregon Area
Industry:
Defense & Space
Work:
LightSmyth
Sr. Scientist
Education:
Moscow Institute of Physics and Technology (State University) (MIPT) 1987 - 1993

Publications

Us Patents

Amplitude And Phase Control In Distributed Optical Structures

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US Patent:
6829417, Dec 7, 2004
Filed:
Sep 2, 2003
Appl. No.:
10/653876
Inventors:
Christoph M. Greiner - Eugene OR, 97401
Dmitri Iazikov - Eugene OR, 97401
Thomas W. Mossberg - Eugene OR, 97401
International Classification:
G02B 634
US Classification:
385 37, 385 10, 385 3, 385 14, 359565, 359569
Abstract:
A distributed optical structure comprises a set of diffractive elements. Individual diffractive element transfer functions collectively yield an overall transfer function between entrance and exit ports. Diffractive elements are defined relative to virtual contours and include diffracting region(s) altered to diffract, reflect, and/or scatter incident optical fields (altered index, surface, etc). Element and/or overall set transfer functions (amplitude and/or phase) are determined by: longitudinal and/or angular displacement of diffracting region(s) relative to a virtual contour (facet-displacement grayscale); longitudinal displacement of diffractive elements relative to a virtual contour (element-displacement grayscale); and/or virtual contour(s) lacking a diffractive element (proportional-line-density gray scale). Optical elements may be configured: as planar or channel waveguides, with curvilinear diffracting segments; to support three-dimensional propagation with surface areal diffracting segments; as a diffraction grating, with grating groove or line segments.

Optical Structures Distributed Among Multiple Optical Waveguides

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US Patent:
6961491, Nov 1, 2005
Filed:
Nov 15, 2004
Appl. No.:
10/989244
Inventors:
Christoph M. Greiner - Eugene OR, US
Dmitri Iazikov - Eugene OR, US
Thomas W. Mossberg - Eugene OR, US
Assignee:
LightSmyth Technologies Inc - Eugene OR
International Classification:
G02B006/34
US Classification:
385 37, 385 3, 385 10, 385 14
Abstract:
An optical apparatus comprises an optical element having at least one set of diffractive elements and multiple channel optical waveguides. Diffractive elements of each set are distributed among diffractive element subsets corresponding to each of the multiple channel waveguides. Each diffractive element set routes, between a corresponding pair of optical ports, those corresponding portions of an optical signal propagating within the optical element that are received by multiple channel waveguides and back-diffracted within the receiving channel waveguides by corresponding diffractive element subsets. The channel optical waveguides are arranged so that optical signals propagate through regions of the optical element between the ports and the first ends of the channel waveguides. Relative spatial arrangement of the first ends of the channel waveguides and corresponding relative phase shifts imparted in the channel waveguides define at least in part a relative spatial arrangement of the corresponding pair of optical ports.

Amplitude And Phase Control In Distributed Optical Structures

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US Patent:
6965716, Nov 15, 2005
Filed:
Nov 15, 2004
Appl. No.:
10/989236
Inventors:
Christoph M. Greiner - Eugene OR, US
Dmitri Iazikov - Springfield OR, US
Thomas W. Mossberg - Eugene OR, US
Assignee:
LightSmyth Technologies Inc - Eugene OR
International Classification:
G02B006/34
US Classification:
385 37, 385 3, 385 10, 385 14, 359565, 359569
Abstract:
A distributed optical structure comprises a set of diffractive elements. Individual diffractive element transfer functions collectively yield an overall transfer function between entrance and exit ports. Diffractive elements are defined relative to virtual contours and include diffracting region(s) altered to diffract, reflect, and/or scatter incident optical fields (altered index, surface, etc). Element and/or overall set transfer functions (amplitude and/or phase) are determined by: longitudinal and/or angular displacement of diffracting region(s) relative to a virtual contour (facet-displacement grayscale); longitudinal displacement of diffractive elements relative to a virtual contour (element-displacement grayscale); and/or virtual contour(s) lacking a diffractive element (proportional-line-density gray scale). Optical elements may be configured: as planar or channel waveguides, with curvilinear diffracting segments; to support three-dimensional propagation with surface areal diffracting segments; as a diffraction grating, with grating groove or line segments.

Temperature-Compensated Planar Waveguide Optical Apparatus

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US Patent:
6985656, Jan 10, 2006
Filed:
Mar 5, 2004
Appl. No.:
10/794634
Inventors:
Dmitri Iazikov - Springfield OR, US
Thomas W. Mossberg - Eugene OR, US
Christoph M. Greiner - Eugene OR, US
Assignee:
LightSmyth Technologies Inc - Eugene OR
International Classification:
G02B 6/34
G02B 5/18
US Classification:
385 37, 385 3, 385 10, 385 14, 359569, 359565
Abstract:
An optical apparatus (spectral filter, temporal encoder, or other) comprises a planar optical waveguide having at least one set of diffractive elements. Each diffractive element set routes by diffraction therefrom a portion of the optical signal propagating in the planar waveguide. The planar waveguide includes at least one material having thermo-optic properties chosen so as to yield a designed temperature dependence of spectral and/or temporal characteristics of the diffracted portion of the optical signal. Variations of material refractive indices, physical dimensions, and/or optical mode distributions with temperature may at least partly compensate one another to yield the designed temperature dependence. Optical materials with ∂n/∂T of various magnitudes and signs may be variously incorporated into the waveguide core and/or cladding. The designed temperature dependence may be: i) substantial temperature independence; ii) a temperature derivative of zero at a selected temperature; or iii) a designed variation with respect to temperature.

Multimode Planar Waveguide Spectral Filter

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US Patent:
6987911, Jan 17, 2006
Filed:
May 11, 2004
Appl. No.:
10/842790
Inventors:
Thomas W. Mossberg - Eugene OR, US
Christoph M. Greiner - Eugene OR, US
Dmitri Iazikov - Springfield OR, US
Assignee:
LightSmyth Technologies, Inc. - Eugene OR
International Classification:
G02B 6/34
US Classification:
385 37, 385 3, 385 10, 385 14, 359565, 359569
Abstract:
A spectral filter comprises a planar optical waveguide having at least one set of diffractive elements. The waveguide confines in one transverse dimension an optical signal propagating in two other dimensions therein. The waveguide supports multiple transverse modes. Each diffractive element set routes, between input and output ports, a diffracted portion of the optical signal propagating in the planar waveguide and diffracted by the diffractive elements. The diffracted portion of the optical signal reaches the output port as a superposition of multiple transverse modes. A multimode optical source may launch the optical signal into the planar waveguide, through the corresponding input optical port, as a superposition of multiple transverse modes. A multimode output waveguide may receive, through the output port, the diffracted portion of the optical signal. Multiple diffractive element sets may route corresponding diffracted portions of optical signal between one or more corresponding input and output ports.

Optical Waveform Recognition And/Or Generation And Optical Switching

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US Patent:
6990276, Jan 24, 2006
Filed:
May 29, 2004
Appl. No.:
10/857987
Inventors:
Lawrence D. Brice - Eugene OR, US
Christoph M. Greiner - Eugene OR, US
Thomas W. Mossberg - Eugene OR, US
Dmitri Iazikov - Springfield OR, US
Assignee:
LightSmyth Technologies, Inc. - Eugene OR
International Classification:
G02B 6/36
US Classification:
385 37, 385 3, 385 10, 385 14, 385 16, 385 20, 359565, 359569
Abstract:
A planar optical waveguide has sets of diffractive elements, each routing between input and output optical ports diffracted portions of an input optical signal. The diffractive elements are arranged so that the impulse response function of the diffractive element set comprises a reference temporal waveform or its time-reverse. A planar optical waveguide has N×M sets of diffractive elements, each routing between corresponding input and output optical ports corresponding diffracted portions of an input optical signal. The N×M diffractive element sets, N×M input optical ports, and N 1×M optical switches enable routing of an input optical signal any of the N input optical sources to any of the M output optical ports based on the operational state of the corresponding 1×M optical switch.

Multiple Distributed Optical Structures In A Single Optical Element

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US Patent:
6993223, Jan 31, 2006
Filed:
Nov 26, 2004
Appl. No.:
10/998185
Inventors:
Christoph M. Greiner - Eugene OR, US
Dmitri Iazikov - Springfield OR, US
Thomas W. Mossberg - Eugene OR, US
Assignee:
LightSmyth Technologies, Inc. - Eugene OR
International Classification:
G02B 6/34
US Classification:
385 37, 385 3, 385 10, 385 14
Abstract:
An optical apparatus comprises an optical element having at least two sets of diffractive elements, each diffractive element comprising at least one diffracting region thereof. At least one diffractive element set collectively routes, between a corresponding input optical port and a corresponding output optical port, at least a portion of a corresponding optical signal incident on the diffracting regions that is diffracted thereby as it propagates from the corresponding input optical port. The optical element includes at least one spatial region thereof wherein multiple diffracting regions of a first diffractive element set are present and diffracting regions of a second diffractive element set are absent. The diffractive elements of each set, the diffracting regions thereof, and each said spatial region are arranged so as to impart desired spatial characteristics, desired spectral characteristics, or desired temporal characteristics onto the corresponding routed portion of the optical signal.

Multiple-Wavelength Optical Source

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US Patent:
7054517, May 30, 2006
Filed:
Aug 21, 2004
Appl. No.:
10/923455
Inventors:
Thomas W. Mossberg - Eugene OR, US
Dmitri Iazikov - Springfield OR, US
Christoph M. Greiner - Eugene OR, US
Assignee:
LightSmyth Technologies Inc - Eugene OR
International Classification:
G02B 6/12
US Classification:
385 14, 385 10, 385129
Abstract:
An apparatus comprises: a planar optical waveguide having sets of locking diffractive elements and means for routing optical signals; and corresponding lasers. Lasers launch signals into the planar waveguide that are successively incident on elements of the locking diffractive element sets, which route fractions of the signals back to the lasers as locking feedback signals. The routing means route between lasers and output port(s) portions of those fractions of signals transmitted by locking diffractive element sets. Locking diffractive element sets may be formed in channel waveguides formed in the planar waveguide, or in slab waveguide region(s) of the planar waveguide. Multiple routing means may comprise routing diffractive element sets formed in a slab waveguide region of the planar waveguide, or may comprise an arrayed waveguide grating formed in the planar waveguide. The apparatus may comprise a multiple-wavelength optical source.
Dmitri M Iazikov from Veneta, OR, age ~53 Get Report