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Nabeel A Riza

from Oviedo, FL
Age ~62

Nabeel Riza Phones & Addresses

  • 1862 Royal Majesty Ct, Oviedo, FL 32765 (407) 359-8320
  • 12024 Moccasin Ct, Orlando, FL 32828 (407) 249-2875 (407) 482-2934
  • Clifton Park, NY
  • Chicago, IL
  • 1862 Royal Majesty Ct, Oviedo, FL 32765 (407) 453-8841

Work

Position: Medical Professional

Education

Degree: Graduate or professional degree

Business Records

Name / Title
Company / Classification
Phones & Addresses
Nabeel Adr Riza
NUSENSORS, INC
10318 Hl Hvn Ave, Tujunga, CA 91042
1862 Royal Majesty Ct, Oviedo, FL 32765
Nabeel A. Riza
President
NOOR TECHNOLOGIES, INC
3361 Rouse Rd STE 170, Orlando, FL 32817
Nabeel A Riza
Principal, Chairman, President, Director
NUONICS, INC
Mfg Pressed/Blown Glass · Mfg Fiber Optics Strands & Fiber Optics Communications Equipment
1862 Royal Majesty Ct, Oviedo, FL 32765
1025 S Semoran Blvd, Winter Park, FL 32792
(407) 256-0028, (407) 671-1093

Publications

Us Patents

Polarization-Based Fiber-Optic Switch

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US Patent:
6360037, Mar 19, 2002
Filed:
Jun 16, 1999
Appl. No.:
09/334159
Inventors:
Nabeel Agha Riza - Orlando FL
Assignee:
Nuonics, Inc. - Orlando FL
International Classification:
G02B 635
US Classification:
385 22, 385 47, 359128
Abstract:
A fiber-optic switch based on a unique retro-reflection scheme is used to create a 2Ã2 switch having two fiber-optic circulators and two polarization rotation devices. Passive and active noise filtering techniques maintain the high performance of the switch even when the polarization rotation devices have poor performance. The switch also has the advantage of zero relative time delay between two channels for any of two switch settings making it appropriate for cascading switching stages. The preferred embodiment of the 2Ã2 optical switch also has a simple design in terms of alignment since only two optical fibers need to be aligned with each other. The switch is also scalable to form N 2Ã2 optical switch modules for use in add/drop, N-wavelength, multiple fiber-optic networks where its novel retro-reflective characteristic allows the use of half of the required wavelength multiplexers/demultiplexers in the system compared to a transmissive switch add/drop filter. An alternative embodiment uses a single polarization beam splitter to form a circulator-free transmissive mode 2Ã2 optical switch with comparable crosstalk but higher alignment complexity.

Multi-Technology Multi-Beam-Former Platform For Robust Fiber-Optical Beam Control Modules

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US Patent:
6525863, Feb 25, 2003
Filed:
Feb 25, 2000
Appl. No.:
09/512436
Inventors:
Nabeel A. Riza - Orlando FL
Assignee:
Nuonics, Inc. - Orlando FL
International Classification:
G02B 2600
US Classification:
359290, 359291, 359292, 359299, 359238
Abstract:
This invention pertains to a basic multi-technology application of cascaded beam-formers. A dual MEMS-EO technology platform method involving a two axis deflection micro-mirror cascaded with a three dimensional electro-optical beam-former such as a multi pixel liquid crystal device forms a powerful reflective control site for an incident beam, thereby inherently providing a robust beam control with both coarse and fine beam control capabilities in three dimensions. The electrically controlled two axis micro-mirror is excellent in providing the large angular beam deflections, while the liquid crystal device provides excellent small-beam deflections. This leads to a mechanically robust beam control module. A multipixel MEMS mirror device option coupled with the EO device can also provide simultaneous multi-beam generation capability. Furthermore, use of macro-pixels for both the MEMS and EO devices provides resistance to single pixel dependent catastrophic failure for the overall module.

High Resolution Fault-Tolerant Fiber-Optical Beam Control Modules

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US Patent:
6563974, May 13, 2003
Filed:
Mar 16, 2001
Appl. No.:
09/811305
Inventors:
Nabeel Agha Riza - Orlando FL
Assignee:
Nuonics, Inc. - Orlando FL
International Classification:
G02B 626
US Classification:
385 18, 385147, 385 17, 385901, 250330
Abstract:
A high resolution, fault tolerant, variable optical attenuator and polarizer module for fiber optical beam control using parallel, serial, and serial-parallel optical control architectures. The module uses mixed control modes to control a macropixel array and includes spatially multiplexed processing techniques. The macropixel array consists of an array of individually controlled pixels, such as a microelectromechanical system (MEMS) mirror array, where each pixel has a specific addressable location in the array, and each pixel can have a unique size, shape and electrical or optical drive format. The module can provide amplitude, routing, and polarization control of an input optical beam. In an embodiment, the module can control the gain of a light beam in fiber optical systems coupled to lenses. In another embodiment, the modules can be cascaded to form a high-resolution fiber optic attenuator. In yet another embodiment, the modules can be used in 1ÃN optical switching applications having on demand gain control.

Multiplexed Optical Scanner Technology

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US Patent:
6687036, Feb 3, 2004
Filed:
Nov 5, 2001
Appl. No.:
10/011254
Inventors:
Nabeel Agha Riza - Oviedo FL
Assignee:
Nuonics, Inc. - Orlando FL
International Classification:
G02B 2610
US Classification:
359204, 359578, 359615, 359298, 250550, 348 36
Abstract:
High speed optical scanner systems and methods using optical multiplexing of wavelengths and spatial codes. In one form, a wavelength multiplexed optical scanner (W-MOS) is disclosed, wherein tuning the wavelength or selection of wavelength accomplishes a high speed, no-moving, parts scanner coupled with a wavelength dispersive element, such as a grating or a thin-film interference filter. In another form, a W-MOS employs beam expansion optics and a freespace-coupled wavelength dispersive element. In another embodiment, the invention includes a fiber-based W-MOS using an optical fiber coupled with a fiber-based wavelength division multiplexer (WDM) device to form a spatially distributed scanner for wide angular coverage in three-dimensional beam scanning. The invention also includes a code multiplexed optical scanner (C-MOS) that uses the principle of holography and spatial code multiple access optical communications. In addition, an optical wireless application is disclosed using the C-MOSs to give fault-tolerance to an indoor wireless network.

Fault-Tolerant Fiber-Optical Multiwavelength Processor

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US Patent:
6859578, Feb 22, 2005
Filed:
May 17, 2002
Appl. No.:
10/151693
Inventors:
Nabeel Agha Riza - Oviedo FL, US
Assignee:
Nuonics, Inc. - Winter Park FL
International Classification:
G02B006/26
US Classification:
385 18, 359225
Abstract:
Multi-wavelength fiber-optic processors based on a fault-tolerant scheme using a macro-pixel to control an optical beam are described. The macro-pixel system uses multiple device pixels per beam to provide a robust digital technique for amplitude control and routing, enabling a module with high optical beam alignment tolerance and resistance to catastropic failure. In one embodiment, the macropixel is implemented via small tilt micromirrors fabricated via optical microelectromechanical systems (MEMS) technology. The system includes fault tolerant fiber-optic processors that can implement add-drop wavelength routing, optical power level conditioning per wavelength, 2×2 optical crossconnects, and 1×N and M×N type broadcast-gain controlled switches. The system can simultaneously and independently implement optical power conditioning and wavelength routing for any wavelength channel. An optical signal processor is constructed using a fiber lens collimator, optical fibers butt-coupled to the fiber lens, and an optical MEMS-based macro-pixel device with three independently controllable tilt mirror states.

High Speed Fiber-Optic Attenuation Modules

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US Patent:
6885807, Apr 26, 2005
Filed:
Mar 14, 2002
Appl. No.:
10/094255
Inventors:
Nabeel Agha Riza - Oviedo FL, US
Assignee:
Nuonics, Inc. - Winter Park FL
International Classification:
G02B006/00
G02B006/42
G02B006/26
US Classification:
385140, 385 18, 385 7, 385 10
Abstract:
Unique multi-diffraction structures using electronically controlled Bragg diffraction devices such as acousto-optic (AO) devices to accomplish optical beam attenuation control functions. These variable optical attenuator (VOA) modules can be fully inertialess as they can use electronically programmable sub-microsecond speed AO devices to implement optical gain controls. These VOAs deliver desirable capabilities in one optically reversible unit, making high dynamic range, low loss, high power handling, ultra-fast, high optical isolation, broadband operation, self-aligning robust modules. These VOAs can be made essentially independent of the optical polarization of the incident light by the use of a unique fixed waveplate compensation technique within the VOA configuration that suppresses polarization dependent loss. Broadband gain control operation over several wavelengths can be achieved by controlling the frequency and electrical drive power of the chosen frequencies feeding the acousto-optic devices. Interleaver devices can be cascaded with the acousto-optic modules to improve wavelength selectivity of the overall VOA modules.

Digital Optical Beam Profiler

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US Patent:
6922233, Jul 26, 2005
Filed:
Feb 7, 2003
Appl. No.:
10/360037
Inventors:
Nabeel Agha Riza - Oviedo FL, US
Assignee:
Nuonics, Inc. - Winter Park FL
International Classification:
G01J001/00
US Classification:
356121
Abstract:
An optical beam profiler using a spatial light modulator and photodetector. In an embodiment, the spatial light modulator is a two-dimensional (2-D) small tilt digital micromirror device. The profiler features fast speed, digital controls, low polarization sensitivity, and high measurement repeatability. The 2-D multi-pixel device-based profiler allows the use of several beam profile measurement concepts including moving knife edge, scanning slit, moving pinhole, variable aperture, and 2-D photodiode array. The proposed digital optical beam profiler can be implemented with any type of digitally operated 2-D spatial light modulator device such as using liquid crystals, magneto-optics, multiple quantum wells, electro-optic polymers, and photonic crystals.

Electronically Tunable Optical Filtering Modules

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US Patent:
6982818, Jan 3, 2006
Filed:
Oct 10, 2003
Appl. No.:
10/684260
Inventors:
Nabeel Agha Riza - Oviedo FL, US
Muhammad Junaid Mughal - Orlando FL, US
Assignee:
Nuonics, Inc. - Winter Park FL
International Classification:
G02F 1/00
G01J 5/02
US Classification:
359237, 359285, 359312, 25033907, 250343
Abstract:
Electronically agile optical filtering modules for equalizing light propagation differences in at least two spaced optical beam pathways in the modules. The modules use optical polarization rotation devices that may include acousto-optic tunable filter (AOTF) devices, liquid crystal devices, and magneto-optic devices. Such devices may be subject to polarization dispersion losses (PDL) and polarization mode dispersion (PMD) that may be different for when light travel along different light paths through the device. By redirecting light beams back along a different bi-directional path through the devices which may exhibit non-uniform performance across orthogonal polarizations, PDL and PMD may be reduced.
Nabeel A Riza from Oviedo, FL, age ~62 Get Report