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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Gong-Ru Lin Chin-Chia Hsu Graduate Program in Electro-Optical Engineering Tatung University Taipei Taiwan

ISBN: (纸本)0780367383

We briefly report the optoelectronic characteristics of Schottky-type photodiode fabricated on the silicon-implanted borosilicate glass (SiO/sub 2/:Si/sup +/)-a novel nano-crystallite Si semi-conducting material. The dark current, photocurrent and breakdown voltage of the SiO/sub 2/:Si/sup +/ photodiode illuminated by Ar/sup +/ laser are measured. The effect of annealing time on the semi-conducting property of such material is characterized.

关键词： Photoconductivity Schottky diodes Photodiodes optical materials Glass Nanostructured materials Dark current Argon Current measurement Annealing

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Tuning the delay-time of passively mode-locked Ti:Sapphire/SBR laser by using phase-discriminating technology

Tuning the delay-time of passively mode-locked Ti:Sapphire/S...

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Conference on Lasers and Electro-Optics, CLEO 2001

作者： Lin, Gong-Ku Chang, Y.-C. Liu, Tze-An Pan, Ci-Ling Graduate Program in Electro-Optical Engineering Tatung University #40 Chung Shan North Rd Sect. 3 Taipei10451 Taiwan Institute of Electro-Optic Engineering National Chiao Tung University 1001 Ta Hsueh Rd. Hsinchu300 Taiwan

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A novel tipped fiber structure for reduction of the fusion-induced coupling loss between erbium-doped and single-mode fibers

A novel tipped fiber structure for reduction of the fusion-i...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Gong-Ru Lin Gong-Cheng Lin Woo-Hu Tsai Kuei-Huei Lin Graduate Program in Electro-Optical Engineering Tatung University Taipei Taiwan Chunghwa Telecom Laboratories Taoyuan Taiwan

We report a nearly 2-time improvement on the quantum efficiency of erbium-doped fiber laser by fusing the erbium-doped fiber with a tipped single-mode fiber with lensed endface. Maximum output power and quantum effici... 详细信息

ISBN: (纸本)0780367383

关键词： Erbium-doped fiber lasers Laser fusion Pump lasers Power generation

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Chirped amplification of picosecond gain-switched laser pulse by using traveling-wave semiconductor optical amplifier

Chirped amplification of picosecond gain-switched laser puls...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Gong-Ru Lin Shih-Kai Lee Kuei-Huei Lin Graduate Program in Electro-Optical Engineering Tatung University Taipei Taiwan Chunghwa Telecom Laboratories Taoyuan Taiwan

The effect of injection current and operating temperature on the performance of traveling-wave semiconductor optical amplifier (TWSOA) in amplification of picosecond negatively chirped optical pulses from gain-switche... 详细信息

ISBN: (纸本)0780367383

关键词： Chirp Semiconductor lasers optical pulses Pulse amplifiers optical pulse generation Temperature optical pulse compression Space vector pulse width modulation High speed optical techniques Stimulated emission

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Controlling the relative delay-time and jitter of femtosecond Ti:sapphire/SBR laser pulse-train by using a frequency-stabilized PZT/mirror

Controlling the relative delay-time and jitter of femtosecon...

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Pacific Rim Conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Gong-Ru Lin Y.-C. Chang Tze-An Liu Ci-Ling Pan Graduate Program in Electro-Optical Engineering Tatung University Taipei Taiwan R. O. C. Institute of Electro-Optic Engineering National Chiao Tung University Hsinchu Taiwan Republic of China

The tuning in delay-time and suppression in phase noise (or timing jitter) of an Ar/sup +/-laser-pumped, passively mode-locked femtosecond Ti:Sapphire laser with intracavity saturable Bragg reflector (SBR) is demonstrated by integrating the laser with an actively-stabilized frequency-discriminating delay-locked loop. The delayed laser pulse-train with maximum pulsewidth, tuning range, gain, and rms timing jitter of 130 fs, 11.3 ns, 2.3 ns/volt, and 290 fs (<500 Hz) are reported.

关键词： optical control Delay optical pulses Frequency Mirrors Laser tuning Laser mode locking Laser noise Timing jitter Phase noise

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Tuning the delay-time of passively mode-locked Ti:sapphire/SBR laser by using phase-discriminating technology

Tuning the delay-time of passively mode-locked Ti:sapphire/S...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Gong-Ru Lin Y.C. Chang Tze-An Liu Ci-Ling Pan Graduate Program in Electro-Optical Engineering Tatung University Taipei Taiwan R. O. C. Institute of Electro-Optic Engineering National Chiao Tung University Hsinchu Taiwan Republic of China

Summary form only given. In-situ and programmable control of the phase as well as the delay time of the optical pulse train generated from ultrafast lasers is mandatory for applications in high-speed optical communication and optoelectronic measurement systems. In this work, we demonstrate for the first time a novel delay-time tunable, passively mode-locked Ti:sapphire laser achieved by feedback controlling the cavity length of the laser via an end mirror integrated with PZT. The inherent laser-timing adjusting circuit by using a digital phase-locked loop in connection with a PZT controller is proposed. The performance of the system such as the maximum delay-time, the tuning resolution, the linearity, the pulse width and the phase noise of the laser pulse during adjustment are discussed.

关键词： Laser tuning Laser feedback Laser mode locking optical pulses Laser noise Delay effects Space vector pulse width modulation optical tuning programmable control optical pulse generation

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Analysis of operating mechanism in semiconductor optical modulator with electron-depleting absorption control

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ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS 1996年第5期79卷 12-23页

作者： Kuwamura, Y Yamada, M Hashimoto, S Faculty of Engineering Kanazawa University Kanazawa Japan 920 Received his B.S. and M.S. degrees from Tokushima University in 1981 and 1983 respectively and joined NEC. He became a Research Associate at Kanazawa University in 1987. He has been involved in research on semiconductor lasers and semiconductor optical modulators. Received his B.S. degree from Kanazawa University in 1971 and his Ph.D. degree from Tokyo Institute of Technology in 1976. He became a Lecturer at Kanazawa University the same year. At present he is a Professor at the same institution. He was an Invited Researcher at Bell Laboratories Holmdel NJ U.S.A. from 1982 to 1983. Currently he is involved in research on semiconductor lasers and semiconductor optical modulators. He received the Yonezawa Memorial Award in 1975 the Manuscript Award in 1976 and an Achievement Award in 1978. Received his B.S. degree from Kanazawa University in 1993 and is currently enrolled in the graduate program at Kanazawa University. He is involved in research on the semiconductor optical modulator.

The optical absorption mechanism of a semiconductor optical modulator with electron-depletion absorption control was theoretically and experimentally investigated. In the doped direct transition semiconductor material, optical absorption increased when electrons were depleted. In the region where electrons are depleted, the number of electrons in the conduction band and holes in the valence band decrease, the impurity energy level shifts due to the decrease of the screening effect and the internal electric field strength increases. Because of these phenomena, the band-to-band electron transition probability increases. As a result, the optical absorption increases in the modulator.

关键词： semiconductor optical modulator optical computer optical operation device electron depletion optical modulator spatial optical modulator

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CIRCULAR OVERMODED WAVE-GUIDE FOR SHIPBOARD USE

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NAVAL ENGINEERS JOURNAL 1993年第2期105卷 39-52页

作者： HUTING, WA WARREN, JW GARNER, PN KRILL, JA William A. Huting:received the B.S.E. degree in electrical engineering from Duke University in 1981 the M.S.E.E. degree from the Georgia Institute of Technology in 1982 and the Ph.D. degree in electrical engineering (electrophysics) from the University of Maryland in 1989. From September 1981 to December 1983 he was a graduate teaching assistant with Georgia Tech. Since January 1984 he has been with The Johns Hopkins University Applied Physics Laboratory where he has principally been involved with the development of circular overmoded waveguides and tapered waveguide transitions for use in naval radar systems. Dr. Huting is a member of the Institute of Electrical and Electronics Engineers. Jeffery W. Warren:received a B.S. degree in 1982 and an M.S. degree in 1984 both in electrical engineering from the University of South Carolina. His thesis research evaluated electro-optical measurements of surface charging of insulators in low-frequency fields. He joined The Johns Hopkins University Applied Physics Laboratory in 1984. Mr. Warren's activities include development and testing of electro-optical systems and the development of high-power low-loss overmoded waveguides. Mr. Warren is a member of the Institute of Electrical and Electronics Engineers. Paul N. Garner: Jr. received the B.S. degree in mathematics and the B.S. degree in mechanical engineering from the University of Maryland in 1973 and 1980 respectively and the M.B.A. degree from the Florida Institute of Technology in 1984. Since 1987 he has been involved with the Cooperative Engagement Capability Program as the lead mechanical engineer and since 1990 he has been with The Johns Hopkins University Applied Physics Laboratory where he is now a member of the Senior Professional Staff. Jerry A. Krill:received the B.S.E.E. and M.S.E.E. degrees from Michigan State University in 1973 and 1974 respectively and a Ph.D. in electrical engineering (electrophysics) from the University of Maryland in 1978. From 1973 to the present he has been with The Johns

Several future Navy combat systems under development require efficient delivery of high power microwave energy from remote transmitters to array antennas. To achieve this requirement, a family of microwave components has been developed and tested. Progress is described in the design and testing of an overmoded circular TE01 mode waveguide applicable to special shipboard needs. Because such a waveguide had originally been developed for low power millimeter band trunkline communications between cities, new theoretical, design, and fabrication techniques had to be developed to meet our specific performance requirements. Moreover, in order to fulfill the combat system requirements, the waveguide would have to withstand harsh military requirements. Over several years the obstacles to the application of overmoded technology to Navy combat systems have been systematically eliminated. The effort has resulted in the invention of several new components, the development and validation of a new computer aided design package, and the implementation of new microwave measurement techniques. The first application of an overmoded waveguide to a combat system element was recently achieved in the successful demonstration of the prototype Cooperative Engagement Capability, and steps toward a production military version of the waveguide have been initiated.

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AUTOMATION OF PROPELLER INSPECTION AND FINISHING

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NAVAL ENGINEERS JOURNAL 1985年第4期97卷 124-131页

作者： STERN, H METZGER, R Howard K. Stern:is presently vice president of Robotic Vision Systems Inc. He received a bachelor of electrical engineering degree from College of the City of New York in 1960. Mr. Stern joined Dynell Electronics Corporation in 1971 and became part of the Robotic Vision Systems Inc. staff at the time of its spin-off from Dynell. He was program manager of the various three-dimensional sensing and replication systems constructed by Dynell and Robotic Vision Systems. As program manager his responsibilities encompassed technical administrative and operational areas. The first two portrait sculpture studio systems and the first three replication systems built by Robotic Vision Systems Inc. were designed manufactured and operated under his direction. Before joining Dynell Mr. Stern was a senior engineer at Instrument Systems Corporation and chief engineer of the Special Products Division of General Instrument Corporation. Prior to these positions Mr. Stern was chief engineer of Edo Commercial Corporation. At General Instrument and Edo Commercial he was responsible for the design and manufacture of military and commercial avionics equipment. Mr. Stern is presently responsible for directing the systems design and development for all of the company's programs. Robert J. Metzger:is currently engineering group leader at Robotic Vision Systems Inc. He graduated summa cum laude from the Cooper Union in 1972 with a bachelor of electrical engineering degree. Under sponsorship of a National Science Foundation graduate fellowship he graduated from the Massachusetts Institute of Technology in 1974 with the degrees of electrical engineer and master of science (electrical engineering). In 1979 Mr. Metzger graduated from Polytechnic Institute of New York with the degree of master of science (computer science). Since 1974 Mr. Metzger has been actively engaged in the design of systems and software for noncontact threedimensional optical measurement for both military and commercial applications. Of particular note are his c

Ship's propellers are currently measured by manual procedures using pitchometers, templates and gauges. This measurement process is extremely tedious, labor intensive and time consuming. In an effort to provide increased accuracy, repeatability and cost effectiveness in propeller manufacture, an automated propeller optical measurement system (APOMS) has been built which rapidly and automatically scans an entire ship's propeller using a 3-D vision sensor. This equipment is integrated with a propeller robotic automated templating system (PRATS) and the propeller optical finishing system (PROFS) which robotically template and grind the propeller to its final shape, using the APOMS-derived data for control feedback. The optical scanning and the final shape are both controlled by CAD/CAM data files describing the desired propeller shape. An automated propeller balancing system is incorporated into the PROFS equipment. The APOMS/PRATS/PROFS equipment is expected to provide lower propeller manufacturing costs.

关键词： PROPELLERS

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