ISSUED U.S. PATENTS - JAMES A. WALKER

General MEMS Technology
4,700,541Shape Memory Alloy Actuator
4,864,824Thin Film Shape Memory Alloy and Method of Producing
Optical MEMS
5,500,761Micromechanical Modulator
5,589,974Micromechanical Modulator
5,636,052Direct View Display Based on a Micromechanical Modulator
5,654,819Improved Micromechanical Modulator
5,745,271Attenution Device for Wavelength Multiplexed Optical Fiber Communications
5,751,469Method and Apparatus for an Improved Micromechanical Modulator
5,767,997Method and Arrangement for a Combined Modulator/Photodetector
5,796,880Technique for Modulatong Optical Signals in Optical Communications
5,808,781Method and Apparatus for an Improved Micromechanical Modulator
5,943,158Micromechanical Anti-Reflection Switched Optical Modulator Array and Fabrication Thereof
5,949,571MARS Optical Modulators
5,966,235Micromechanical Modulator Having an Improved Membrane Configuration
6,066,844Optical Receiver with Integrated Variable Attenuator
6,178,033Micromechanical Membrane Tilt-Mirror Switch
6,178,284Variable Single-mode Attenuators by Spatial Interference
6,204,946Reconfigurable Wavelength Division Multiplex Add/drop Device Using Micromirrors
6,321,010Optical Microstructure and Method of Manufacture
6,549,692Optical Monitoring of the Angular Position of Micro Mirrors in an Optical Switch
6,661,562Optical Modulator and Method of Manufacture Thereof
6,704,130Electromechanical Optical Modulator Providing Stray Light Control
6,751,377Micromechanically Active Reconfigurable Add-Drop Filters
6,751,377MARS Optical Modulators
Optical Communications Components
5,936,752WDM Source for Access Applications
5,943,454Free-space Optical Bypass-Exchange Switch
5,963,684Multiple-wavelength Optical Transceiver
6,631,246Wavelength Division Multiplexed Optical Communication System Having Tunable Multi-channel Dispersion Compensating Filters
6,631,246Mechanically Tunable Optical Devices Such as Interferometers
Packaging Technology
5,135,590Optical Fiber Alignment Method
5,185,846Optical Fiber Alignment Apparatus Including Guiding and Securing Plates
5,345,529Method for Assembly for an Optical Fiber Connective Device
5,416,872Arrangement for Interconnecting an Optical Fiber to an Optoelectronic Component
5,430,819Multiple Optical Fiber Connector and Method of Making Same
5,625,733Arrangement for Interconnecting an Optical Fiber to an Optical Component
5,647,044Fiber Waveguide Package with Improved Alignment Means
5,815,616Optical Packaging Assembly for Reflective Devices
5,831,262Article Comprising an Optical Fiber Attached to a Micro-Mechanical Device
5,940,558Optical Packaging Assembly for Transmissive Devices
Opto-Electronic VLSI
5,605,856Method for Designing an Electronic Integrated Circuit and Optical Inputs
5,578,162Integrated Composite Semiconductor Devices and Method of Manufacture
5,589,404Monolithically Integrated VLSI Optoelectronic Circuits and Method of Fabrication
5,858,814Hybrid Chip and Method Thereof
5,897,333Method for Forming Integrated Composite Semiconductor Devices
5,918,794Solder Bonding of Dense Arrays of Microminiature Contact Pads
6,034,431Electronic Integrated Circuit with Optical Inputs and Outputs
Semiconductor Device Technology
5,443,685Composition and Method for Off-axis Growth Sites on Non-Polar Substrate
5,468,689Method for Preparation of SiN Ga Diffusion Barrier for Use in MBE Growth of GaAs
5,510,277Surface Treatment for Silicon Substrates
5,668,023Composition for Off-Axis Growth Sites on Non-Polar Substrates
5,784,187Wafer Level Integration of an Optical Modulator and III-V Photodetector
5,786,925Method and Composition for Arbitrary Angle Mirrors in Substrates for Use in Hybrid Optical Systems
6,048,751Process for Manufacture of Composite Semiconductor Devices
Miscellaneous
4,938,552Electrostatic Optical Fiber Switch
5,170,455Optical Connective Device
6,212,056Micromachined Variable Capacitor