| Multi-Spectral Imaging Ellipsometer for Fast, In-Situ Monitoring of Monolayer Film Deposition |
31 MAY 1998 |
37 pages |
| Authors:
Lothar Kempen; PHYSICAL OPTICS CORP TORRANCE CA
|
 | The goal of the Phase I project was to demonstrate the feasibility of mapping the thickness of amorphous layers in the monolayer thickness range using an imaging ellipsometer setup. The optical system has been established and tested, and the system's functionality was demonstrated both on commercial test substrates and on specifically fabricated test samples with patterned amorphous films. Even without the multi-spectral extension of the system, which ... |
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| Miniature Guided Light Array Sequential Scanning Display for Head Mounted Displays |
15 MAY 1998 |
35 pages |
| Authors:
Tim M. Aye; PHYSICAL OPTICS CORP TORRANCE CA
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| In Phase I, Physical Optics Corporation (POC) demonstrated the feasibility of Guided Light Array Sequential Scanning (GLASS) display technology for use in low-cost, low-power compact night-vision head mounted displays (HMDs) . GLASS is based on a unique combination of three technologies: low-power light emitting diode (LED) arrays; a polymer waveguide array substrate; and liquid crystal micro-optics. POC's display surpasses current HMD displays in terms of size, ... |
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| A Highly Functional Decision Paradigm Based on Nonlinear Adaptive Genetic Algorithm |
07 OCT 1997 |
69 pages |
| Authors:
Andrew Kostrzewski; Jeongdal Kim; PHYSICAL OPTICS CORP TORRANCE CA
|
| In Phase 2, the genetic algorithm (GA) developed in Phase 1 was refined and integrated with a neural network for network topology optimization. In addition, a Mathlink GA was developed as a Mathematica module. POC wrote the Mathematica plug-in module as a function optimizer using Mathlink. The GA route optimizer was written, tested, and demonstrated. On the hardware side, a TMS320C80 based parallel DSP board was used as a testbed ... |
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| Holographic Waveguide Array Rollable Display |
APR 97 |
47 pages |
| Authors:
Tin M. Aye; PHYSICAL OPTICS CORP TORRANCE CA
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| POC investigated the feasibility of developing a holographic waveguide array rollable display based on holographic optics and a multilayer polymer waveguide substrate. The Phase 1 investigation began with a preliminary study, modeling the multiplanar waveguide and analyzing its light propagation characteristics. Based on the waveguide requirements, possible display system architectures were investigated. In parallel, several types of photopolymers were characterized to evaluate their suitability for holographic and multiplanar waveguide fabrication. ... |
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| A Highly Functional Decision Paradigm Based on Nonlinear Adaptive Genetic Algorithm |
30 JUL 96 |
28 pages |
| Authors:
Jeongdal Kim; PHYSICAL OPTICS CORP TORRANCE CA
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| In the first year of this Phase 2 research program, POC refined the GA Optimizer by rewriting it in DLL format and optimizing the fuzzy logic-based GA control rules. We also evaluated existing neural network training methods using the GA, and examined areas in which our algorithm can improve their performance. POC has also initiated a new line of optimization development tools, the route optimizer. Initial development efforts demonstrate the ... |
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| Optically Assisted Three Dimensional Packaging for Multichip Module Applications |
JUN 96 |
116 pages |
| Authors:
Michael Wang; PHYSICAL OPTICS CORP TORRANCE CA
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| This report presents a board-to-board optical interconnect system for 3-D packaging of multichip module applications. The interconnect prototype demonstrates both waveguide-backplane-fiber interconnects and fiber ribbon interconnects for interboard applications. On the fiber-ribbon-based board-to- board interconnects, distributed feedback laser arrays are used as signal transmitters. PIN type photodetector arrays are used for optical-to-electrical signal conversion at the receiver board. On the waveguide-backplane-fiber interconnects, channel waveguide electrooptic modulator arrays were used as ... |
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| Extremely Narrowband and Cascaded Holographic Adjustable Range Tunable (ENCHART) Filter |
DEC 95 |
29 pages |
| Authors:
Alexander Rizkin; PHYSICAL OPTICS CORP TORRANCE CA
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| In Phase I, Physical Optics Corporation's R&D Division (POC) designed and developed a new Extremely Narrowband Cascaded Holographic Adjustable Range Tunable (ENCHART) filter using two holographic Fabry Perot filters (HFPFs): a coarse filter to select the desired portion of the optical range, and an extremely narrow (0.1 A) bandwidth fine filter operating within this selected range at any arbitrary wavelength. The fine filter is an electrically tuned liquid crystal cell. ... |
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| A Microprism Array for Large-Scale. Wide-Band Interconnection of Optoelectronic Systems |
17 APR 95 |
77 pages |
| Authors:
Tomasz Jannson; Andrew Kostrzewski; Dai H. Kim; Vladimir Katsman; PHYSICAL OPTICS CORP TORRANCE CA
|
| In this program, Physical Optics Corporation (POC) proposed to develop an optical communication/switching system with data speeds well beyond any state-of-the-art electronic board-to-board computer interconnect. This interconnect is based on the use of microprism arrays to achieve large-scale, wideband interconnections for optoelectronic systems. The main problem studied in this Phase II program was the current limitations of purely electronic interconnects, such as wide interconnection time bandwidths, large clock skew, and ... |
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| Manufacturing of High Speed Modulators for Dual-Use Communication Systems |
APR 95 |
45 pages |
| Authors:
Gajendra Savant; PHYSICAL OPTICS CORP TORRANCE CA
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| The state-of-the art in electronics, ICs, and electrical interconnects has reached its limit in both clock speed and in the amount of data that can be processed in a single clock cycle. Clock speed is limited by clock skew, clock delay, and the many different path (track) lengths that an electrical signal must take in a PC board. The amount of processable data is limited by the number of pins ... |
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| Photonic Band Gap Structures on Polymer Materials for Microstructure Waveguides and High-Speed Interconnects |
MAR 95 |
40 pages |
| Authors:
Michael Wang; PHYSICAL OPTICS CORP TORRANCE CA
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| Physical Optics Corporation (POC) proposed a new concept of creating photonic band gaps on optical waveguides for the realization of low loss bands. These low loss bands are particularly useful for the realization of high density optical interconnection networks for multi-chip modules and other single-board high-speed functional circuits. In the Phase I program, POC focused on the structures that can be used to construct waveguide photonic band gap structures, namely ... |
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| Fourier Synthesis Lithographic Machine for Large Panel Display Fabrication |
31 JAN 95 |
52 pages |
| Authors:
Lev Sadovnik; PHYSICAL OPTICS CORP TORRANCE CA
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| This report addresses the development of a substitute for conventional lithographic technologies used to fabricate flat panel displays. Conventional technology has several weaknesses: an image field <50 mm x 50 mm, a need for expensive projection equipment and precision stepper machines with a positioning accuracy of -0.25 microns and depth of focus of -1 micron; and the necessity to use complicated mask technologies which pollute the environment. Physical Optics Corporation ... |
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| Low Threshold All-Optical Crossbar Switch on GaAs-GaAlAs Channel Waveguide Arrays |
14 SEP 94 |
73 pages |
| Authors:
Tomasz Jannson; Andrew Kostrzewski; PHYSICAL OPTICS CORP TORRANCE CA
|
| During the Phase II project entitled 'Low Threshold All-Optical Crossbar Switch on GaAs - GaAlAs Channel Waveguide Array,' Physical Optics Corporation (POC) developed the basic principles for the fabrication of all- optical crossbar switches. Based on this development. POC fabricated a 2 x 2 GaAs/GaAlAs switch that changes the direction of incident light with minimum insertion loss and nonlinear distortion. This unique technology can be used in both analog and ... |
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| Optically Controlled MMW Beamsteering Beamforming Antenna |
21 JUN 94 |
30 pages |
| Authors:
Lev Sadovnik; PHYSICAL OPTICS CORP TORRANCE CA
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| In this research project, Physical Optics Corporation (POC) has developed theoretical and laboratory models of semiconductor waveguides for MMW antennas. The physical model has been tested experimentally demonstrating attenuation of MMW propagation in the semiconductor waveguide. POC has also investigated coupling between semiconductor and metal waveguides. A new type of evanescent-coupling scanning antenna has been demonstrated and tested. The results of this project form the foundation for the fabrication of ... |
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| A Highly Functional Decision Paradigm Based on Nonlinear Adaptive Genetic Algorithm |
20 APR 94 |
71 pages |
| Authors:
Dai H. Kim; PHYSICAL OPTICS CORP TORRANCE CA
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| In response to DOD Army solicitation A93-023, POC proposed a new type of processing module that is superior to any other type of computing method. The greatest advantage of POC's processing module is it combines the ability of a human to adapt to changing facts with the constant, uniform behavior, predictability, speed, large information storage capacity and non-emotional responses of machines. This proposed highly dimensional decision module is based on ... |
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| Polymer Based All-Optic Reconfigurable Interconnects |
28 FEB 94 |
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| Authors:
Tomasz Jannson; PHYSICAL OPTICS CORP TORRANCE CA
|
 | In Phase I of this project, POC successfully implemented a prototype all-optic reconfigurable polymer-based crossbar switch. POC's all-optic reconfigurable polymer-based crossbar switch represents a unique combination of polymer techniques, simple geometry optics, and waveguide technology. These three essential technologies are original POC developments. POC's crossbar switch will provide reconfigurability, large fan-out, and radiation hardening. This is a new technology for both parallel and distributed processing and communication networks. The Phase ... |
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| An Optically-Assisted 3-D Cellular Array Machine |
05 NOV 93 |
40 pages |
| Authors:
Freddie Lin; PHYSICAL OPTICS CORP TORRANCE CA
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| In order to increase the real-time performance of next-generation image processing systems, Physical Optics Corporation (POC) explored a new architectural structure -- a hybrid optically-assisted 3-D cellular array machine. Three techniques are used in this architecture. An analog processing technique is used for front-end high-speed image preprocessing. A digital processing technique is employed for high-precision and highly programmable image processing. An optical interconnect technique is used for high-efficiency high-bandwidth data ... |
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| Smart Environmental Monitor Based on Neural Networks and Multi-Spectral Pattern Recognition |
SEP 93 |
19 pages |
| Authors:
Taiwei Lu; PHYSICAL OPTICS CORP TORRANCE CA
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| In Phase I of this project, Physical Optics Corporation (POC) accomplished the goal of the original proposal which was to develop and optimize a unique neural network (NN) algorithm that performs rapid spectral signal processing and identification. POC's NN algorithm was tested with extremely noisy Raman spectra from Lawrence Livermore National Laboratory and experimentally showed at least ten times better sensitivity and reliability than conventional spectral signal processing methods. POC ... |
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| Low Threshold All-Optical Crossbar Switch on GaAs-GaAlAs Channel Waveguide Arrays |
14 AUG 93 |
31 pages |
| Authors:
Tomasz Jannson; PHYSICAL OPTICS CORP TORRANCE CA
|
| POC has proposed a 10 x 10 all-optical crossbar switch based on an optically activated modulator. A laser beam with an energy higher than the bandgap of the GaAs switches the propagation direction of the guided beam. Strong index modulation (>2%) can be induced by this method, which is not dependent on polarization for the EO effect. Both TE and TM guided waves have the same induced index change. Because ... |
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| Novel N x N Integrated Channel Waveguide Optical Crossbars for Large Scale High Speed Non-Blocking Data Switching |
31 MAY 93 |
60 pages |
| Authors:
Michael Wang; PHYSICAL OPTICS CORP TORRANCE CA
|
| Physical Optics Corporation proposed a new structure for an optical crossbar based on a multi-wavelength ring resonator tuning/switching. To demonstrate its feasibility, in Phase I, we designed, analyzed, and demonstrated a basic ring resonator tuning/switching element for the crossbar. Two approaches for ring resonator tuning were identified: fiber-based ring resonator and waveguide-based ring resonator. For simplicity of the Phase I concept demonstration, we demonstrated a fiber ring resonator. At HeNe ... |
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| Broadband Near IR Laser Hazard Filters |
10 SEP 92 |
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| Authors:
Gajendra Savant; PHYSICAL OPTICS CORP TORRANCE CA
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| Ocular protection against laser radiation and ballistic fragments is required for military aviators and ground personnel. Protection against laser radiation in several laser hazard and threat wavelength regions is required to prevent ocular injury from existing potentially hazardous systems. The laser hazard and threat wavelengths extend from the ultraviolet through the near infrared. There is potential for a cost effective protection against fixed wavelength threats utilizing narrow-band holographic reflection filters ... |
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| Multiplexed Tunable Resonated Holograms for Reconfigurable Optical Interconnects, |
22 MAY 1992 |
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| Authors:
E. M. Strzelecki; F. Lin; PHYSICAL OPTICS CORP TORRANCE CA
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| Enhanced diffraction efficiency of a grating placed inside an optical resonator is reviewed. This concept, implemented with multiplexed holograms inside a tunable resonator, can be used for reconfigurable optical interconnects. Experimental results on resonated holograms and tunable resonators are also presented. |
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| Compact Crossbar Switch for Optical Interconnects, |
22 MAY 1992 |
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| Authors:
Freddie Lin; Eva M. Strzelecki; William Liu; PHYSICAL OPTICS CORP TORRANCE CA
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| Optical crossbar switches are used in a variety of applications: in optical computing, optical communications, and optical interconnects in computers. High speed optical crossbars have been demonstrated for the use in communications such as waveguide electro-optic switches in LiNbO3, semiconductor quantum well modulators. For applications in optical computing it is important to have very large switching arrays to utilize the massively parallel capability of optical signal processing. This has been ... |
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| A Microprism Array for Large-Scale, Wide-Band Interconnection of Optoelectronic Systems |
15 MAR 92 |
33 pages |
| Authors:
Ray T. Chen; PHYSICAL OPTICS CORP TORRANCE CA
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| In contrast to any existing means of interconnection for a large- scale, high-speed optoelectronic system, Physical Optics Corporation (POC) proposes fabricating and using a microprism (-100 um in size,) array (MPA) as a wide-band coupler for two-dimensional and three-dimensional system integration. The flexibility of MPA's angles allows implementation of the MPA to any point to point interconnects. Realizing that the major bottle neck of hologram-based interconnection is the intrinsic limitation ... |
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| An Optically Activated Modulator and GaAs-GaAlAs Compound Semiconductor Channel Waveguide |
30 APR 91 |
53 pages |
| Authors:
Ray Chen; PHYSICAL OPTICS CORP TORRANCE CA
|
| We proposed and then developed for the first time an optically activated modulator (OAM) and modulator array on GaAs-GaAlAs compound semiconductor channel waveguides. A channel waveguide device with an optical activation window of 5 um in diameter was fabricated. Optical activation was produced by using HeNe 631.8 nm wavelength as the free-carrier generator and a 1.3 um laser as the signal carrier. Thirty-three percent modulation depth was observed and 10-2 ... |
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| Optical Cache Memory |
APR 91 |
64 pages |
| Authors:
Chai-Pei Kuo; PHYSICAL OPTICS CORP TORRANCE CA
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| The goal of this effort is to build an Exploratory Development Model (EDM), of an optical cache memory utilizing existing off-the-shelf components to demonstrate system feasibility, key system concepts, and validation of the overall system approach. An optical parallel addressing architecture was identified which utilizes a vector-matrix inner product as the basic frame work for an optical cache memory system. Furthermore, in order to mimic the dynamic memory requisition and ... |
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| Diagnosis of Natural and Induced Diseases of Military Importance |
01 NOV 90 |
45 pages |
| Authors:
Gajendra Savant; PHYSICAL OPTICS CORP TORRANCE CA
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| Physical optics Corporation (POC) has investigated a new diagnostic technology that can be directly applied to the detection of the AIDS antigen or antibody, unlike the current procedures which only detect antibodies to HI-V. POC's method is based on a highly sensitive ligand receptor, binding to its specific membrane receptor that is accompanied by conformational changes of the receptor protein which is followed by incorporating a fluorescent lipid probe into ... |
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| Broadband Near IR Laser Hazard Filters. Phase 1 |
02 OCT 90 |
56 pages |
| Authors:
Gajendra Savant; PHYSICAL OPTICS CORP TORRANCE CA
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| Fabrication of holographic broadband laser eye protection (BLEP) filters was investigated as a new approach to protecting ground troops from eye damage by near infrared (IR) lasers. The infrared broadband filters combined high optical density (OD>4), high photopic visual transmission efficiency (60 to 75%) and large angular protection (>40 deg) for the 694 nm wavelength and with the environmental stability necessary for battlefield conditions. Phase I research successfully fabricated broadband ... |
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Reports by Corporate Author
