1
Anthony S Kewitsch, George A Rakuljic, Amnon Yariv: Wavelength selective optical couplers. Arroyo Optics, Jones Tullar & Cooper PC, September 8, 1998: US05805751 (41 worldwide citation)

A wavelength selective optical fiber coupler having various applications in the field of optical communications is disclosed. The coupler is composed of dissimilar waveguides in close proximity. A light induced, permanent index of refraction grating is recorded in the coupler waist. The grating filt ...


2
Anthony S Kewitsch, George A Rakuljic, Amnon Yariv: Wavelength selective optical devices. Arroyo Optics, Jones Tullar & Cooper PC, February 23, 1999: US05875272 (36 worldwide citation)

Wavelength selective devices and subsystems having various applications in the field of optical communications are disclosed. These devices and subsystems are composed of bi-directional grating assisted mode couplers. The high add/drop efficiency and low loss of this coupler enable low loss waveleng ...


3
Anthony S Kewitsch, George A Rakuljic, Amnon Yariv: Wavelength selective optical routers. Arroyo Optics, Jones Tullar & Cooper P C, March 13, 2001: US06201909 (32 worldwide citation)

Using the wavelength selectivity and low loss characteristics of optical couplers, in which index of refraction gratings in a non-evanescent waveguide merged region reflect only a selected wavelength band, signal switching and control systems of novel characteristics are provided for multi-wavelengt ...


4
Anthony S Kewitsch, George A Rakuljic, Amnon Yariv: Wavelength selective optical couplers. Arroyo Optics, Jones Tullar & Cooper P C, September 18, 2001: US06289699 (27 worldwide citation)

A wavelength selective optical fiber coupler having various applications in the field of optical communications is disclosed. The coupler is composed of dissimilar waveguides in close proximity. A light induced, permanent index of refraction grating is recorded in the coupler waist The grating filte ...


5
Anthony S Kewitsch, George A Rakuljic, Doruk Engin, Seth J Greenberg, Phil A Willems, Xiaolin Tong: Methods of fabricating grating assisted coupler devices. Arroyo Optics, Jones Tullar & Cooper P C, January 2, 2001: US06169830 (23 worldwide citation)

Advantageous methodologies are disclosed for embedding periodic patterns in optical waveguide elements such as optical fibers. Polarization independence in an elongated waist region of an add/drop coupler can be established by measuring polarization characteristics during fusion and elongation, and ...


6
Anthony S Kewitsch, George A Rakuljic, Phil A Willems, Xiaolin Tong: Grating assisted coupler devices. Arroyo Optics, Jones Tullar & Cooper P C, May 22, 2001: US06236782 (21 worldwide citation)

An add/drop filter for optical wave energy incorporates a Bragg grating in a very narrow waist region defined by merged lengths of elongated optical fibers. Light is propagated into the waist region via adiabatically tapered fibers and is transformed from two longitudinally adjacent fibers into two ...


7
George Rakuljic, Anthony S Kewitsch, Victor Leyva: Diffractive fourier optics for optical communications. Arroyo Optics, Jones Tullar & Cooper P C, September 21, 2004: US06795182 (17 worldwide citation)

Systems and methods for modifying, switching, rearranging or otherwise controlling the individual wavelength components of DWDM optical signals are described, which employ compact refolding and reshaping of these dimensionally patterned beams within a confined volume. The wavelength components of th ...


8
Victor Leyva, Xian Li Yeh, Huey Lu: Devices and methods for temperature stabilization of Bragg grating structures. Arroyo Optics, Jones Tullar & Cooper P C, December 4, 2001: US06327405 (12 worldwide citation)

Precisely tensioned optical fiber devices are held in a temperature compensated package, with a small diameter span of a fiber containing a Bragg grating of a needed periodicity being supported under tension at opposite ends between spaced apart end members whose thermal expansion characteristics di ...


9
Anthony S Kewitsch, George A Rakuljic, Doruk Engin, Seth J Greenberg, Phil A Willems, Xiaolin Tong: Methods of fabricating grating assisted coupler devices. Arroyo Optics, Jones Tullar & Cooper P C, October 15, 2002: US06465153 (12 worldwide citation)

Advantageous methodologies are disclosed for embedding periodic patterns in optical waveguide elements such as optical fibers. Polarization independence in an elongated waist region of a coupler can be established by measuring polarization characteristics during fusion and elongation, and controllin ...


10
Xiaolin Tong, Anthony S Kewitsch, George A Rakuljic: Fabrication of photosensitive strong grating couplers. Arroyo Optics, Jones Tullar & Cooper PC, August 5, 2003: US06603903 (12 worldwide citation)

Systems devices and methods in accordance with the invention impart high strength index of refraction patterns to photosensitive optical devices, such as Bragg gratings written in optical fibers. A length of small diameter fiber retaining photosensitivity is fabricated by flame elongation of an opti ...