Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics最新文献_第10页

Low Power Measurement Of Nonlinear Index Using Chirped Pulse Self-phase Modulation 啁啾脉冲自相位调制非线性指标的低功耗测量

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.610570

L. Chan, P. Chan, H. Tsang

引用次数: 0

Conceptual Design Of Laser-diode Pumped Zig-zag Path Slab Laser Driver For Inertial Fusion Energy 用于惯性聚变能的激光二极管泵浦之字形平板激光驱动器的概念设计

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.610746

H. Matsui, T. Eguchi, T. Kanabe, M. Yamanaka, M. Nakatsuka, Y. Izawa, S. Nakai

引用次数: 0

Terahertz Radiation From Coherent Phonons Excited In Semiconductors 半导体中相干声子激发的太赫兹辐射

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.610726

Masahiko Tani, R. Fukasawa, Hajime Abe, Shuji Matsuura, K. Sakai, Shin-ichi Nakashima

引用次数: 77

3.3 V GaAs Preamplifier For 156 Mb/s Optical Fiber Communication Systems 用于156mb /s光纤通信系统的3.3 V GaAs前置放大器

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.610594

T. Katayanagi, S. Hyodoh, T. Saitoh, N. Kobayashi, T. Ushikubo

{"title":"3.3 V GaAs Preamplifier For 156 Mb/s Optical Fiber Communication Systems","authors":"T. Katayanagi, S. Hyodoh, T. Saitoh, N. Kobayashi, T. Ushikubo","doi":"10.1109/CLEOPR.1997.610594","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610594","url":null,"abstract":"method that uses low frequency perturbation. Figure 1 shows the principle of DC drift compensation. When a small amplitude low frequency perturbation is superimposed on the driving signal, the envelope of the modulator output waveform is amplitude-modulated by the low frequency component. Furthermore, the amplitude and the phase of the envelope depend on the change of the bias voltage and on the drift direction of the driving point, respectively. Therefore, compensation of DC drift is possible by detecting the amplitude and the phase of the envelope of the modulator output signal. The envelope of the modulator output signal is detected by square-detection after eliminating the DC components. The drift direction is determined by coherent detection after this squaredetection. This method does not require a wide-bandwidth amplitude modulation circuit in the driving circuit, and can separate the driving signal and control signal unlike the method of reference 2. Therefore, this method is suitable for ultra-high bit rate transmission system. The operation of the DC drift compensation circuit was tested using the configuration shown in Fig. 2. Figures 3(a) and @) show a change in the bias voltage and the bit error rate (BER) performance, respectively. Integration control was used in the experiment because the DC drift of the driven point was very slow. A triangular wave signal with the cycle of about 1000 sec and the amplitude of 0.8V was used as the quasi-drift signal. The driving voltage of the modulator was 4.0V,,,,. The driving signal was a 10 Gb/s 2',-l pseudo-random bit stream. The input power for the bit error rate measurement system was adjusted to where the receiver sensitivity was the BER of 2 x without control. The frequency of the superimposed signal was 20 KHz and the modulation index was about 1%. As shown in Fig. 3, the variation of the bias voltage was suppressed to less than 0.1V,","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125113502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design And Scalability Of Optical Networks 光网络的设计与可扩展性

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.610364

P. Bayrel

引用次数: 0

Two-state Quantum Cryptography With Noisy State-preparation 带噪声状态准备的二态量子密码

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.610510

M. Koashi, N. Imoto

引用次数: 0

Slab Co, Lasers Excited By All Solid State Rf Generators Slab Co，全固态射频发生器激发的激光器

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.610577

S. Kobayashi, T. Murata, K. Terai

{"title":"Slab Co, Lasers Excited By All Solid State Rf Generators","authors":"S. Kobayashi, T. Murata, K. Terai","doi":"10.1109/CLEOPR.1997.610577","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610577","url":null,"abstract":"Water-operated heat exchanger since line-narrowed outputs can be obtained maintaining the continuous wavelength tunability. In this paper, we demonstrate 10 GHz active frequency shift using a high-pressure CO, laser. The experimental apparatus is shown in Fig. 1. The main section of the system was an injection-locked high-pressure CO, laser with a gain volume of 1 X 1 X 30 cm’. The laser can operate at a pressure up to 10 atm. Then, the maximum input energy density was 1000 J/t. In addition to a main cavity consisting of a rear reflector (RR) and an output coupler (OC), a subcavity was constructed by the RR and a total reflector (TR). The RR was mounted on the laser tube in order to shorten the cavity length. The lengths of the main cavity and the subcavity were 95 cm and 105 cm, respectively. An A 0 frequency shifter instaIled in the subcavity was driven at a frequency of 40 MHz. The experiment was carried out at around the 1OP (20) line since no dispersive element for coarse tuning was used. Figure 2 shows the frequency shift as a function of the gate pulse width of the PC. The slope of 9.5 GHz/ ks agreed well with the value of 9.4 GHz/ks calculated from the round-trip frequency shift of 80 MHz and the round-trip time of 8.5 ns in the subcavity. The maximum frequency shift obtained was 9 GHz at a pressure of 8 atm. At higher pressures the maximum frequency shift was decreased by the reduction of the gain duration time although the gain bandwidth became wider. In order tu select other wavelength regions, we replaced the RR by a low-dispersive (50 lines/”) diffraction grating. The frequency shift was successfully obtained without degrading the tuning linearity and the maximum frequency shift. “Department of Physics, Science University of Tokyo, 1-3 Kagurazaka, Shinjyuku-ku, Tokyo 262, IAPAN","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125478124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Near Field Optical Imaging Of An Atomic Sapphire Step And Nanometric Lithium Niobate Crystals Under The Absence Of Shear Force Feedback 无剪切力反馈下原子蓝宝石阶和纳米铌酸锂晶体的近场光学成像

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.611014

R. U. Maheswari, S. Takehara, S. Mononobe, G. Lee, M. Yoshimoto, H. Koinuma, M. Ohtsu, Kanagawa

{"title":"Near Field Optical Imaging Of An Atomic Sapphire Step And Nanometric Lithium Niobate Crystals Under The Absence Of Shear Force Feedback","authors":"R. U. Maheswari, S. Takehara, S. Mononobe, G. Lee, M. Yoshimoto, H. Koinuma, M. Ohtsu, Kanagawa","doi":"10.1109/CLEOPR.1997.611014","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.611014","url":null,"abstract":"Near-field microscopy (NOM) has been getting a lot of attention for its application over a variety of fields such as biological imaging, spectroscopic diagnostics of novel semiconductor devices, etc.' In such applications, the resolution capability of the NOM has to be improved to the nanometer level. In this study, we use collection mode NOM in which the sample is illuminated under total internal reflection and the evanescent field generated on the sample surface is scattered by a nanometric probe. For characterizing the vertical resolution, a sapphire staircase consisting of monoatomic layers grown epitaxially has been used. The height of the step as measured by atomic force microscope (AFM) is 1 to 4 nm and width of step is 250 nm. In order to characterize lateral resolution, nanocrystals of LiNbO, grown on the sapphire staircase have been used. The average size of a LiNbO, nanocrystal based on AFM is 80 X 40 nm2. Figure 1 shows the experimental system of a c-mode NOM and a micrograph of the nanometric probe used. Light from LD (685 nm) is made to incident the prism at the angle of total internal reflection. Sapphire sample is mounted on the prism surface with a sandwich of index","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131554833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hollow Waveguides For Medical Infrared Lasers 医用红外激光器用空心波导

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.610971

M. Miyagi, Y. Matsuura

{"title":"Hollow Waveguides For Medical Infrared Lasers","authors":"M. Miyagi, Y. Matsuura","doi":"10.1109/CLEOPR.1997.610971","DOIUrl":"https://doi.org/10.1109/CLEOPR.1997.610971","url":null,"abstract":"With the emergence of flexible, low-loss hollow waveguides, the use of infrared lasers for medical applications has grown rapidly in recent years. For delivery of infrared laser light, hollow-core fibers have advantages of ruggedness, environmental stability, and high-power threshold over the infrared solid-core fibers, such as fluoride glasses, metal halides, and chalcogenides fibers. In this paper, we focus our attention on the hollow-fiber beam delivery system for medical infrared lasers such as Er:YAG and CO, lasers. Since Er:YAG lasers emitting at 2.94 pm wavelength and CO, lasers at 10.6 pm show high absorption to water, these lasers enable highly efficient ablation or cutting of hard and soft tissues surrounded by water. Therefore, these infrared lasers are particularly appropriate for dentistry, ophthalmology, and dermatology applications. Furthermore, combined with flexible hollow fibers, the medical laser sysem that is compact, easy to handle, and cost effective has been produced recently. We review the current status of hollow waveguides that are made of glass and metal, having dielectric coatings for the low attenuation losses. The transmission characteristics and the fabrication processes of waveguides developed by a variety of groups are reported. For example, Fig. 1 shows the measured bending losses of a glass hollow fiber for the Er:YAG laser with silver and fluorocarbon-polymer, inner coatings. The straight loss of the 700-pm bore fiber is 0.2 dB/ m, and when the fiber is bent at the curvature of 10 m-', i.e., the 10-cm bending radius, the loss is still as low as 2.0 dB/ m.","PeriodicalId":260495,"journal":{"name":"Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129089135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

WDM Networking Technology WDM组网技术

Technical Digest CLEO/Pacific Rim '97 Pacific Rim Conference on Lasers and Electro-Optics Pub Date : 1997-07-14 DOI: 10.1109/CLEOPR.1997.610300

V. Chan

引用次数: 0