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Optical Amplifiers and Their Applications最新文献

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Nd3+-doped Fluoride Fiber Amplifier Module With 10 dB Gain and High Pump Efficiency 具有10db增益和高泵浦效率的掺Nd3+氟化物光纤放大器模块
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1991.wb3
Y. Miyajima, T. Sugawa, T. Komukai
{"title":"Nd3+-doped Fluoride Fiber Amplifier Module With 10 dB Gain and High Pump Efficiency","authors":"Y. Miyajima, T. Sugawa, T. Komukai","doi":"10.1364/oaa.1991.wb3","DOIUrl":"https://doi.org/10.1364/oaa.1991.wb3","url":null,"abstract":"Recently, Nd3+-doped fluoride fiber has attracted much interest, because it has the potential for optical amplification around the 1.3 μm communication band[1]. In terms of the effect of ESA(excited state absorption) and the probability of radiative transition, fluoride fiber is preferable to silica fiber as a host glass[2], However, some problems must be solved for the development of a practical amplifier. First, gain has not been sufficiently large for a practical pump power to be obtained from diode lasers. Second, gain has been obtained in wavelengths longer than 1.31 μm.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126834321","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: 1
Very-Low Threshold Loop-Mirror Switch Incorporating an EDFA 结合EDFA的极低阈值环镜开关
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1990.pdp3
D. Richardson, R. Laming, D. Payne
{"title":"Very-Low Threshold Loop-Mirror Switch Incorporating an EDFA","authors":"D. Richardson, R. Laming, D. Payne","doi":"10.1364/oaa.1990.pdp3","DOIUrl":"https://doi.org/10.1364/oaa.1990.pdp3","url":null,"abstract":"All-optical switching devices based on ultra-fast optical non-linearities are of considerable interest for use in high-speed optical signal processing and telecommunications systems. Several switching schemes utilising χ(3) in optical fibres1-4 have been reported, but, although fast, they have large switching thresholds (100 -1000W) and suffer from environmental instability. Recent work5-7 has concentrated on the fibre Non Linear Optical Loop Mirror (NOLM) (or non-linear Sagnac interferometer), since the configuration is inherently a balanced interferometer and therefore environmentally stable. Consequently, longer fibre lengths can be used and the switching threshold reduced to 10-100W, a figure which is unfortunately still too high for practical application.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126038122","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: 1
1.48μm and 0.98μm High-Power Laser Diodes for Erbium-Doped Fiber Amplifiers 用于掺铒光纤放大器的1.48μm和0.98μm大功率激光二极管
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1991.wc1
I. Mito, K. Endo
{"title":"1.48μm and 0.98μm High-Power Laser Diodes for Erbium-Doped Fiber Amplifiers","authors":"I. Mito, K. Endo","doi":"10.1364/oaa.1991.wc1","DOIUrl":"https://doi.org/10.1364/oaa.1991.wc1","url":null,"abstract":"The development of erbium-doped fiber amplifiers has recently progressed rapidly. Highly efficient power conversion for 1.48μm wavelength pumping enables a post-amplifier to achieve output power greater than 100mW1). When pumped in 0.98μm wavelength, the erbium-doped fiber amplifiers showed very low noise property2), which permits high receiver sensitivity as a pre-amplifier.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121652419","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
Erbium-Doped Fiber Amplifiers for Optical Fiber Communications 光纤通信用掺铒光纤放大器
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1990.mb1
E. Desurvire
{"title":"Erbium-Doped Fiber Amplifiers for Optical Fiber Communications","authors":"E. Desurvire","doi":"10.1364/oaa.1990.mb1","DOIUrl":"https://doi.org/10.1364/oaa.1990.mb1","url":null,"abstract":"The field of erbium-doped fiber amplifiers (EDFA) [1-4] has expanded rapidly, from the developments in rare-earth-doped fiber fabrication [5-8], to the more recent demonstration of practical laser-diode pumped devices [9-11]. Because of their many advantages, it is likely that EDFA’s will contribute to significant progress in future 1.5μm optical fiber communication systems [12]. The interest of using optical amplifiers, as an alternative to electronic repeaters, is that they make it possible to upgrade the information-carrying capacity of a system by simply increasing the data rate and/or the number of optical channels.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122886803","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
Determination of the gain and saturation characteristics of a semiconductor laser amplifier using a ringlaser configuration 使用环形激光结构的半导体激光放大器的增益和饱和特性的测定
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1990.mc4
L. Tiemeijer, P. Thijs, T. Dongen, J. Binsma
{"title":"Determination of the gain and saturation characteristics of a semiconductor laser amplifier using a ringlaser configuration","authors":"L. Tiemeijer, P. Thijs, T. Dongen, J. Binsma","doi":"10.1364/oaa.1990.mc4","DOIUrl":"https://doi.org/10.1364/oaa.1990.mc4","url":null,"abstract":"Determination of the gain of a semiconductor laser amplifier using a tunable laser source or a set of fixed wavelength lasers is a rather time consuming exercise. The reason is that the position of the gain peak and the positions of the local maxima and minima belonging to the residual Fabry-Perot ripple are not known in advance and moreover shift with increasing drive current. Therefore determination of the peak gain at various currents levels, which is desirable to select promising devices worthy of further study or to provide feedback in a fabrication process, involves measuring the gain at various different wavelengths to ensure that the measured value corresponds to a (local) maximum. We present an alternative method of gain determination using the laser amplifier in a ringlaser configuration (fig. 1). This method is very fast and does not require a tunable signal source.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129070954","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: 3
Amplification Characteristics of Nd:YGG Thin-film Waveguide pumped with LD LD泵浦Nd:YGG薄膜波导的放大特性
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1990.wa6
Y. Miyazaki, M. Wada, Toshio Matsushita
{"title":"Amplification Characteristics of Nd:YGG Thin-film Waveguide pumped with LD","authors":"Y. Miyazaki, M. Wada, Toshio Matsushita","doi":"10.1364/oaa.1990.wa6","DOIUrl":"https://doi.org/10.1364/oaa.1990.wa6","url":null,"abstract":"Optical direct amplifiers are devices that amplify an optical signal light by adding current or light to it. Semiconductor laser amplifiers and fiber amplifiers have several disadvantages, such as the need of a current circuit and length over few kilometers, respectively(1),(2). In the other hand, thin film waveguide type optical amplifiers(3) have the following advantages, 1) miniaturization of optically pumped amplifiers, 2) reduction of pumping power, 3) combination of different optical thin film waveguide devices ( modulators, switches, isolators) in the form of integrated optical circuits, 4) low propagation loss compared to semiconductor optical integrated circuit.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125574146","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
The future role of semiconductor optical amplifiers 半导体光放大器的未来作用
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1991.we1
I. Marshall
{"title":"The future role of semiconductor optical amplifiers","authors":"I. Marshall","doi":"10.1364/oaa.1991.we1","DOIUrl":"https://doi.org/10.1364/oaa.1991.we1","url":null,"abstract":"The recent rapid development of Erbium doped fibre amplifiers with high gains, high saturation powers and low noise figures [1,2] has deflected the attention of system engineers from the older semiconductor technology [3] and it is thus now hard to find new published papers which use semiconductor amplifiers in a system context. Device development has not ceased however [4] and the performance of semiconductor amplifiers has improved considerably. In addition there are important applications for which doped fibre amplifiers are not suitable at present e.g. at 1.3 µm, and others for which they will never be suitable, e.g. as fast optical switches. This presentation attempts to review these possibilities for future practical application of semiconductor optical amplifiers in the light of the recent developments of the technology.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126846250","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
Wavelength Division Multiplexers for 980 nm Pumping of Erbium-Doped Fiber Optical Amplifiers 用于980 nm泵浦掺铒光纤放大器的波分复用器
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1990.wa5
D. Hall, C. Truesdale, D. Weidman, M. Vance, L. J. Button
{"title":"Wavelength Division Multiplexers for 980 nm Pumping of Erbium-Doped Fiber Optical Amplifiers","authors":"D. Hall, C. Truesdale, D. Weidman, M. Vance, L. J. Button","doi":"10.1364/oaa.1990.wa5","DOIUrl":"https://doi.org/10.1364/oaa.1990.wa5","url":null,"abstract":"The choice of wavelength division multiplexer (WDM) couplers for use in fiber-based optical amplifiers is extremely important to obtain optimum device performance. At a minimum, these devices need to have low insertion loss at the doped-fiber pump and signal wavelengths, λp and λs. Small splice losses between the coupler input pigtail and the incoming telecommunication fiber at λs and between the coupler output pigtail and the Er-doped gain fiber at λs and λp are important to maximize amplifier signal-to-noise and to efficiently use available pump power. In addition, in high-gain amplifier applications, coupler backscatter and crosstalk may also impact noise. Finally, as practical amplifiers tend towards smaller physical size, bend induced loss in the coupler pigtails also becomes an important factor.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121620479","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
Materials for Erbium-Doped Fiber Amplifiers 掺铒光纤放大器材料
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1991.wd1
W. Miniscalco
{"title":"Materials for Erbium-Doped Fiber Amplifiers","authors":"W. Miniscalco","doi":"10.1364/oaa.1991.wd1","DOIUrl":"https://doi.org/10.1364/oaa.1991.wd1","url":null,"abstract":"Fiber offers an extremely favorable geometry for optical devices, and fiber lasers [1] and amplifiers [2] were reported only shortly after the first bulk glass laser [3]. The choice of host composition has always been an important consideration. Silicates are the oldest and best understood glasses, and the first glass lasers used silicate compositions selected for high rare earth solubility and long lifetimes for the metastable state. The use of phosphate glass significantly improved the performance of early bulk Er3+ lasers [4] and it has become the most common host for bulk glass lasers doped with Er3+ and Nd3+. Although outstanding performance has been achieved using single-mode silica fiber, silica is a poor host for most activator ions, particularly rare earths. The influence of glass composition on the properties of Er3+ fiber amplifiers will be considered with particular emphasis placed upon silica; a more detailed discussion can be found in Ref. [5].","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124984621","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
Ultimate capacity of multi repeater optical amplifier transmission systems 多中继器光放大器传输系统的极限容量
Optical Amplifiers and Their Applications Pub Date : 1900-01-01 DOI: 10.1364/oaa.1990.tuc1
H. Wakabayashi
{"title":"Ultimate capacity of multi repeater optical amplifier transmission systems","authors":"H. Wakabayashi","doi":"10.1364/oaa.1990.tuc1","DOIUrl":"https://doi.org/10.1364/oaa.1990.tuc1","url":null,"abstract":"Studies on multi repeater transmission systems using optical amplifiers have been widely conducted by using various modulation schemes such as Intensity modulation, Constant envelop modulation and Solitons. At present, the product of bit rates and transmission distance have reached to 5.5Tera bits km for single carrier systems(1) and 4.5Tera bits for WDM systems(2). Recent experimental results encourage early application to practical multi-repeater transmission in near future.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122118260","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
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