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Hwang Y.-T.,National Chung Hsing University | Chen J.-Y.,New Span Opto-Technology Inc.
2014 IEEE 12th International New Circuits and Systems Conference, NEWCAS 2014 | Year: 2014

We present an interface synthesis tool (design compiler) which can generate interface circuits automatically to expedite the IP (silicon intellectual property) integration process in SoC designs. The protocol specification issue is first addressed and a programming paradigm in SystemC language is developed. The methodology for interface synthesis is next elaborated. Conventional compiler techniques such as lexical analysis, syntax parsing and code generation are applied plus the new processing specific to interface synthesis. This includes protocol signal mapping proxy for additional semantic information, interface FSM synthesis for the controller of protocol conversion and architecture template mapping for the underlined hardware. Various interface design examples are conducted and the experimental results show the competitiveness of the proposed synthesis tool. © 2014 IEEE.


Qiu W.,Georgia Institute of Technology | Zhang K.,Georgia Institute of Technology | Liu J.,Georgia Institute of Technology | Koros W.J.,Georgia Institute of Technology | And 3 more authors.
Polymer | Year: 2010

A polymeric sorbent with high selectivity and capacity for phenols in aqueous stream was synthesized based on 5-amino-2-methoxyphenol functionalized poly(glycidyl methacrylate-co-trimethylolpropane trimethacrylate), P(GMA-TRIM)-AMP. In addition to sorption, the materials were studied using solid-stated NMR, Fourier transform infrared (FT-IR), elemental analysis, and scanning electron microscopy (SEM). Well-defined internal micrometer-sized spheres of P(GMA-TRIM)-AMP have stable macropore inner structures surrounded by a thin outer shell. The sorbent has functional groups that are similar in chemical structure to 4-propyl-2-methoxyphenol, PMP, and show high selectivity in removal of PMP from glucose- and xylose-containing monosaccharides solutions in bioethanol production without the loss of the saccharides. The sorbent could also be used to separate phenol and 4-chlorophenol from waste water that contained concentrations of phenols in the ppm range. The sorbent is easily regenerated, has good durability and reusability. It was regenerated and reused at least 10 times without loss in sorption behavior. © 2010 Elsevier Ltd.


Wang J.H.,New Span Opto-Technology Inc. | Wang M.R.,University of Miami
Optics Communications | Year: 2016

We report the use of spectral domain optical coherence tomography (SD-OCT) for non-contact optical evaluation of fastener flushness and countersink surface profile. Using a handheld galvanometer scanner of only 0.5 lb in weight the SD-OCT can perform line scan surface profile measurement of fastener and countersink without demanding accurate scan center alignment. It demonstrates fast measurement of fastener flushness, radius, slant angle, as well as countersink edge radius and surface angle within 90 ms suitable for handheld operation. With the use of a broadband light source at 840 nm center wavelength and 45 nm spectral bandwidth and a lens of 60 mm focal length, the low coherence interferometry based SD-OCT measurement offers axial depth resolution of 8.5 μm, lateral resolution of 19 μm, and measurement depth of 3.65 mm in the air. Multi-line scans can yield 3D surface profiles of fastener and countersink. © 2016 Published by Elsevier B.V.


Baig S.,University of Miami | Jiang G.,University of Miami | Sun Q.,New Span Opto-Technology Inc. | Wang M.R.,University of Miami
Journal of the European Optical Society | Year: 2013

We report on the fabrication of single-mode channel waveguide structures produced by the vacuum assisted microfluidic soft lithography technique. The soft lithographic technique in conjunction with a specially designed photomask pattern and a synthesized UV curable epoxy resin can result in a high yield, cost-effective method for fabrication of channel waveguides. In particular, the use of the microfluidic technique allows for the production of freestanding high quality single-mode channel waveguides on various substrates. Notably, the introduction of sectional flow tapers allows for proper uniform filling of long length small cross-sectional waveguide structures that would ordinarily succumb to clogging at shorter distances during channel filling. The fabricated polymer waveguide was 30 mm in length with a cross section dimension of 7 × 7 μm. The single-mode waveguide propagation was confirmed with beam profiler measurement, and the measured propagation loss for this polymer waveguide was about 0.55 dB/cm. © The Authors. All rights reserved.


Baig S.,University of Miami | Jiang G.,University of Miami | Sun Q.,New Span Opto-Technology Inc. | Wang M.R.,University of Miami
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

We report on the fabrication of an eight-channel single-mode waveguide array via vacuum assisted microfluidic soft lithographic technique. The incorporation of sectional flow tapers perpendicular to the waveguide direction allows for the realization of long single-mode channel waveguide arrays, thus overcoming the waveguide length limitation set by the viscosity of the UV curable resin. The refractive index and other properties of the synthesized UV curable core waveguide resin can be tuned through the reformulation of material composition. © 2012 SPIE.


Baig S.,University of Miami | Sun Q.,New Span Opto-Technology Inc. | Wang M.R.,University of Miami
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2011

We report on the fabrication of single-mode channel waveguide structures via the vacuum assisted microfluidic technique. The soft lithographic technique in conjunction with specially designed photomask patterns and UV curable epoxy resins can result in a high yield, cost-effective method for fabrication of channel waveguides. In particular, the use of microfluidic technique allows for the production of freestanding high quality single-mode channel waveguides on various substrates. The viscosity limitation of the microfluidic fabrication of small cross-sectional waveguide structures, especially single-mode channel waveguides at visible wavelengths, has been overcome through the introduction of sectional flow tapers.


Wu P.,New Span Opto-Technology Inc. | Sun S.Q.,New Span Opto-Technology Inc. | Baig S.,University of Miami | Wang M.R.,University of Miami
Optics Express | Year: 2012

We demonstrate a nanoscale optical reinforcement concept for reversible holographic recording. The bone-muscle-like mechanism enables enhancement of holographic grating formation due to the collective alignment of liquid crystal (LC) molecules nearby photo-reconfigurable polymer backbones. The LC fluidity facilitates the ease of polymer chain transformation during the holographic recording while the polymer network stabilizes the LC collective orientation and the consequential optical enhancement after the recording. As such, the holographic recording possesses both long-term persistence and real-time rewritability. © 2012 Optical Society of America.


Wu P.,New Span Opto-Technology Inc. | Sun S.Q.,New Span Opto-Technology Inc. | Baig S.,University of Miami | Wang M.R.,University of Miami
Optics Express | Year: 2012

Updatable holography is considered as the ultimate technique for true 3D information recording and display. However, there is no practical solution to preserve the required features of both non-volatility and reversibility which conflict with each other when the reading has the same wavelength as the recording. We demonstrate a non-volatile and updatable holographic approach by exploiting new features of molecular transformations in a polymer recording system. In addition, by using a new composite recording film containing photo-reconfigurable liquid-crystal (LC) polymer, the holographic recording is enhanced due to the collective reorientation of LC molecules around the reconfigured polymer chains. © 2012 Optical Society of America.


Grant
Agency: Department of Defense | Branch: Air Force | Program: STTR | Phase: Phase II | Award Amount: 750.00K | Year: 2010

Two-dimensional (2D) visualization techniques have limit capacity to achieve understanding of full dimensionality of the battlefield. Rewritable 3D holographic storage is promising for updatable 3D display applications. In Phase I, New Span Opto-Technology has demonstrated novel concepts of both holographic recording technique and recording material system without the use of high voltage. We have established the feasibility of updatable 3D holographic recording with high diffraction efficiency and relatively fast recording speed. The recorded holograms can be erased by either thermal or optical method. The thermal erasing process is only a few seconds and the film can record new holograms again at exactly the same location. The holographic storage is nonvolatile if no erasure process is applied. In addition, the reading beam has the same wavelength as coherent recording beams. Thus, no color distortion presents in the reconstructed image which will be the true copy of the object. In Phase II, we will improve our design based on our successful Phase I work, and develop a large area prototype of true 3-D display system to meet Phase II performance requirements, including high diffraction efficiency, wide viewing angle, fast writing time, long persistence, and controllable erasure with thousands write/rewrite cycle capability. BENEFIT: The successful development of the proposed UHD system will benefit 3D updatable holographic display for mission planning in a variety of military platforms. The proposed UHD technique offers several benefits over the conventional holographic solution, such as using the same wavelength for both reading and recording, and no high-voltage electrical field across the recording film. The proposed system may also be useful for geo-referenced navigation of aircrafts, precision-guided munitions. The applications of 3D mapping display in military are wide, including guidance, missile seekers and warning, wide area surveillance, landmark tracking for precision landing and hazard avoidance, as well as providing reliable location and status of friendly forces. Apart from the defense applications, the proposed UHD-based technique has potential non-military commercial applications, such as commercial airline navigation, intelligent guidance systems for civilian vehicles, as well as R&D for geology. The true updatable 3D holographic displays are ideal tools for medical and industrial applications that require situational awareness. In addition, demand on high-density data storage has been exploded in civilian sector. Technologies currently available for data storage have come to their physical limits and may not be able to meet future demands. The proposed project will benefit the development for next generation of data storage technology.


Grant
Agency: Department of Defense | Branch: Air Force | Program: STTR | Phase: Phase II | Award Amount: 750.00K | Year: 2010

Two-dimensional (2D) visualization techniques have limit capacity to achieve understanding of full dimensionality of the battlefield. Rewritable 3D holographic storage is promising for updatable 3D display applications. In Phase I, New Span Opto-Technology has demonstrated novel concepts of both holographic recording technique and recording material system without the use of high voltage. We have established the feasibility of updatable 3D holographic recording with high diffraction efficiency and relatively fast recording speed. The recorded holograms can be erased by either thermal or optical method. The thermal erasing process is only a few seconds and the film can record new holograms again at exactly the same location. The holographic storage is nonvolatile if no erasure process is applied. In addition, the reading beam has the same wavelength as coherent recording beams. Thus, no color distortion presents in the reconstructed image which will be the true copy of the object. In Phase II, we will improve our design based on our successful Phase I work, and develop a large area prototype of true 3-D display system to meet Phase II performance requirements, including high diffraction efficiency, wide viewing angle, fast writing time, long persistence, and controllable erasure with thousands write/rewrite cycle capability. BENEFIT: The successful development of the proposed UHD system will benefit 3D updatable holographic display for mission planning in a variety of military platforms. The proposed UHD technique offers several benefits over the conventional holographic solution, such as using the same wavelength for both reading and recording, and no high-voltage electrical field across the recording film. The proposed system may also be useful for geo-referenced navigation of aircrafts, precision-guided munitions. The applications of 3D mapping display in military are wide, including guidance, missile seekers and warning, wide area surveillance, landmark tracking for precision landing and hazard avoidance, as well as providing reliable location and status of friendly forces. Apart from the defense applications, the proposed UHD-based technique has potential non-military commercial applications, such as commercial airline navigation, intelligent guidance systems for civilian vehicles, as well as R&D for geology. The true updatable 3D holographic displays are ideal tools for medical and industrial applications that require situational awareness. In addition, demand on high-density data storage has been exploded in civilian sector. Technologies currently available for data storage have come to their physical limits and may not be able to meet future demands. The proposed project will benefit the development for next generation of data storage technology.

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