1
Mujibun Nisa Khan, Jane Elisa Zucker: Single-mode waveguide structure for optoelectronic integrated circuits and method of making same. Lucent Technologies, December 30, 1997: US05703989 (63 worldwide citation)


An optical waveguide for use in an optoelectronic integrated circuit and the associated method of manufacturing such a waveguide. The waveguide is formed by the successive layering of varied waveguide materials on a III-V semiconductor substrate, thereby producing a slab waveguide. The various layer ...


2
David John DiGiovanni, Bernard Raymond Eichenbaum, Mujibun Nisa Khan: Method and apparatus for bidirectional communication over a single optical fiber. Lucent Technologies, April 30, 2002: US06381045 (12 worldwide citation)


Dual concentric core fiber is used for optical communication. Inbound messages lying in a first wavelength channel are received from a terminal portion of the fiber, and outbound messages lying in a second such channel are injected into the terminal portion. The optical fiber has at least one annula ...


3
Mujibun Nisa Khan, Rene Henri Monnard: Adiabatic Y-branch waveguide having controllable chirp. Lucent Technologies, John A Caccuro, April 24, 2001: US06222966 (6 worldwide citation)


Changing the index in the two output branches of a Y-branch optical waveguide in opposite directions, in amounts which are controlled by electrical signals applied to the branches, is used to control the chirp of the signal outputted from the Y-branch optical waveguide. In this manner, predetermined ...


4
Mujibun Nisa Khan, Jane Elisa Zucker: Adiabatic tapered S-bends for compact digital switch arrays. Lucent Technologies, June 17, 1997: US05640471 (4 worldwide citation)


An optical switch array in an M.times.N configuration has a set of M input digital optical Y-branches; a set of N output digital optical Y-branch; and at least one S-bend interconnect waveguide connecting at least one input digital optical Y-branch to at least one output digital optical Y-branch, wi ...


5
Mujibun Nisa Khan, Rene Henri Monnard: Adiabatic Y-branch modulator with negligible chirp. Lucent Technologies, May 16, 2000: US06064788 (3 worldwide citation)


Methods of using an adiabatic Y-branch digital optical modulator provide a substantially chirp-free modulator by changing the refractive index of only a first output branch of the modulator in response to a modulating signal. A second output branch of the modulator, where no refractive index change ...


6
Mujibun Nisa Khan: Light distribution using tapered waveguides in LED-based tubular lamps as replacements of linear fluorescent lamps. January 8, 2013: US08348467 (2 worldwide citation)


An LED replacement-lamp design concept comprising tapered waveguides to provide uniform and broad light distribution is disclosed. Currently, most LED-based replacement lamps for tubular fluorescent lamps place discrete surface-mount LEDs directly on a cylindrical base, which produce wasteful, non-u ...


7
Mujibun Nisa Khan: Efficient, uniform, and dimmable sign or display illumination methods using overlapped LED modules on a raised grid platform. August 13, 2013: US08506119


Concepts for increasing brightness and uniformity and providing dimming for LED-illuminated signs and display are disclosed. Substantial increase in brightness is achieved via reducing the distance between LED modules and the sign or display they illuminate by placing the LEDs on a raised grid platf ...


8
Mujibun Nisa Khan: Method for determining waveguide facet reflectivity. Lucent Technologies, Jeffery J Brosemer, August 8, 2000: US06100968


A method for determining waveguide facet reflectivity from the electric field propagated from an optical fiber into an optical waveguide. The method determines the electric field propagated from the optical fiber into the optical waveguide by combining field terms resulting from multiple reflections ...


9
Mujibun Nisa Khan, Jane Elisa Zucker: Compact and fabrication tolerant high speed digital optical y -switches. A T &Amp T, DU RIXIN, January 28, 1998: CN96112934


An optical switch provides improved high speed digital optical switching with a compact and fabrication tolerant configuration, and includes a first waveguide portion, a plurality of intermediate waveguide portions connected to the first portion, with each intermediate portion associated with a firs ...


10
Mujibun Nisa Khan: Efficient LED sign or display illumination methods using overlapped modules on grids to increase sign or display surface brightness while obtaining better thermal management. July 28, 2011: US20110179683-A1


A concept for reducing the distance between LED lamps and illuminated surface to produce high-brightness signs is disclosed. Currently, most electric-signs place LED modules at the cabinet enclosure base. Since enclosures are deep, surface illumination from LEDs drops significantly. LEDs are therefo ...



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