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Optical Amplifiers and Their Applications最新文献

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A High Power and Low Noise Transmitter for AM-VSB Transmission Using Erbium-doped Fiber Post Amplifier 基于掺铒光纤后置放大器的AM-VSB高功率低噪声发射机
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.fb3
M. Shigematsu, M. Nishimura, Toshio Okita, K. Iizuka
{"title":"A High Power and Low Noise Transmitter for AM-VSB Transmission Using Erbium-doped Fiber Post Amplifier","authors":"M. Shigematsu, M. Nishimura, Toshio Okita, K. Iizuka","doi":"10.1364/oaa.1991.fb3","DOIUrl":"https://doi.org/10.1364/oaa.1991.fb3","url":null,"abstract":"Erbium doped fiber amplifiers(EDFAs) with high output power and no distortion degradation are very useful for the amplitude-modulated vestigial-sideband(AM-VSB) transmission systems which require a relatively high received power for a preferred carrier to noise ratio(CNR) and a low distortion[1][2], A field trial was conducted and feasibility of multidistribution for trunk lines was confirmed[3].","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133225611","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
73.6km Attenuation Free Concatenated Fibers Doped with Distributed Erbium 掺分布铒的73.6km无衰减连接光纤
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.thd4
D. Tanaka, A. Wada, T. Sakai, T. Nazawa, R. Yamauchi
{"title":"73.6km Attenuation Free Concatenated Fibers Doped with Distributed Erbium","authors":"D. Tanaka, A. Wada, T. Sakai, T. Nazawa, R. Yamauchi","doi":"10.1364/oaa.1991.thd4","DOIUrl":"https://doi.org/10.1364/oaa.1991.thd4","url":null,"abstract":"Recently, distributed Er-doped fiber amplifiers have become of great interest.1)-5) Intrinsic fiber loss can be compensated by the distributed gain. As a result, a fiber which is free from the attenuation can be realized.2) Due to its small gain, the distributed EDFA also has the advantage of low amplified spontaneous emission(ASE). Moreover, no isolator to prevent lasing is necessary, so bi-directional transmission is possible. This kind of fiber is also applicable to soliton transmission.5)","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130485939","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
Femtosecond Soliton Collapse by Frequency Modulation Instability in Erbium-Doped Fiber Amplifiers 掺铒光纤放大器中的调频不稳定性导致飞秒孤子坍缩
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.thb5
I. Gabitov, M. Romagnoli, S. Wabnitz
{"title":"Femtosecond Soliton Collapse by Frequency Modulation Instability in Erbium-Doped Fiber Amplifiers","authors":"I. Gabitov, M. Romagnoli, S. Wabnitz","doi":"10.1364/oaa.1991.thb5","DOIUrl":"https://doi.org/10.1364/oaa.1991.thb5","url":null,"abstract":"Recent experiments [1-3] have reported the amplification of femtosecond solitons in erbium doped optical fibers. Whenever the spectral width of the soliton is as wide as the linewidth of the amplifier, the gain that is seen by the pulse is reduced with respect to that of a weak continuous wave signal. However, it has been observed that the pulse width remains virtually unchanged, at least over some initial stage of the amplification process. Physically, this is due to the fact that the pulse shape is determined by two competing effects. From one side, the amplified pulse tends to remain a soliton and therefore to compress its time width. On the other hand, the finite spectral width of the gain leads to preferential amplification of the central part of the pulse spectrum and this would lead to pulse broadening. If these two effects balance each other, the output pulse width may remain almost undistorted. This compensation is however an unstable phenomenon.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124868873","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 Amplifier Spectral Behavior In Transoceanic Links 掺铒光纤放大器在跨洋链路中的光谱行为
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.tha2
J. Blondel, J. Marcerou, J. Auge, H. Fevrier, P. Bousselet
{"title":"Erbium-Doped Fiber Amplifier Spectral Behavior In Transoceanic Links","authors":"J. Blondel, J. Marcerou, J. Auge, H. Fevrier, P. Bousselet","doi":"10.1364/oaa.1991.tha2","DOIUrl":"https://doi.org/10.1364/oaa.1991.tha2","url":null,"abstract":"Some experiments have already been presented for long haul transmission using in-line Erbium-Doped Fiber Amplifiers (EDFA) [1,2]. However, the question is to determine the actual system limitations for transoceanic links (up to 10,000 km), such as EDFA maximum output power, amplifier spacing, optical filter design. Some theoretical [3] and experimental [4] works have been published mainly with a recirculating loop.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122060376","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: 6
High-Efficiency Erbium-Doped Fiber Amplifier using Mode Field Diameter Adjusting Technique 基于模式场直径调节技术的高效掺铒光纤放大器
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.fd3
A. Wada, T. Sakai, D. Tanaka, T. Nozawa, R. Yamauchi
{"title":"High-Efficiency Erbium-Doped Fiber Amplifier using Mode Field Diameter Adjusting Technique","authors":"A. Wada, T. Sakai, D. Tanaka, T. Nozawa, R. Yamauchi","doi":"10.1364/oaa.1991.fd3","DOIUrl":"https://doi.org/10.1364/oaa.1991.fd3","url":null,"abstract":"For efficient operation of an Er-doped fiber amplifier (EDFA) at 1.55 µm band it is essential to maximize the pump intensity in the Er-doped region because of the three level system [1], A high NA structure of EDF is effective to reduce the mode field diameter (MFD) of the pump and to achieve strong pump intensity [2], and has resulted in excellent gain performance [3],[4], In practical use, however, such small MFD fibers have a connection/splicing problem due to the mode field diameter mismatching. For example, approximately 1 dB splice loss is expected between an EDF with a 5 µm MFD and a conventional dispersion shifted fiber (DSF) with a 8 µm MFD. The smaller MFD of EDF, the higher splice loss. The increase of splicing loss causes noise figure degradation in pre-amplifiers and decreasing of conversion efficiency in booster amplifiers.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125906162","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: 2
Single-Mode, 980 nm Pump Lasers for Fiber Amplifiers 单模，980纳米泵浦激光器用于光纤放大器
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.wc4
F. D. Crawford, W. Sharfin, B. Elman, R. Lauer, P. Mebrahtu
{"title":"Single-Mode, 980 nm Pump Lasers for Fiber Amplifiers","authors":"F. D. Crawford, W. Sharfin, B. Elman, R. Lauer, P. Mebrahtu","doi":"10.1364/oaa.1991.wc4","DOIUrl":"https://doi.org/10.1364/oaa.1991.wc4","url":null,"abstract":"Pump lasers for Er3+-doped silica fiber optical amplifiers must demonstrate excellent spatial mode stability to high output power levels in order to achieve useful gain.1,2 The pump band at 980 nm is the most efficient of the principle Er3+ absorption bands in terms of gain per input optical power.3 Pumping at 980 nm is also preferred in comparison to pumping at 1480 nm because it reduces the noise introduced into the amplified optical signal.4","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131339247","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
Gain Enhancement in Reflected-Pump Erbium-Doped Fiber Amplifiers 反射泵浦掺铒光纤放大器的增益增强
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.thd2
C. R. Giles, J. Stone, L. Stulz, K. Walker, C. Burns
{"title":"Gain Enhancement in Reflected-Pump Erbium-Doped Fiber Amplifiers","authors":"C. R. Giles, J. Stone, L. Stulz, K. Walker, C. Burns","doi":"10.1364/oaa.1991.thd2","DOIUrl":"https://doi.org/10.1364/oaa.1991.thd2","url":null,"abstract":"Improved performance of EDFAs is achieved using wavelength-selective reflective filters to double-pass the pump beam. In low-gain amplifiers these filters can increase the saturation output power by 2 dB or reduce the pump power requirements.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131099256","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: 4
OTDR in Optical Amplifier Transmission Systems Using EDFAs Containing Optical Circulators 含光环路器的edfa光放大器传输系统中的OTDR
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.fe1
Y. Sato, S. Nishi, K. Aoyama
{"title":"OTDR in Optical Amplifier Transmission Systems Using EDFAs Containing Optical Circulators","authors":"Y. Sato, S. Nishi, K. Aoyama","doi":"10.1364/oaa.1991.fe1","DOIUrl":"https://doi.org/10.1364/oaa.1991.fe1","url":null,"abstract":"Optical time domain reflectometry (OTDR) is an effective technique for locating breaks and for determining the loss distribution along a fiber [1][2]. However, OTDR can not be used with optical transmission lines containing traditional Er-doped fiber amplifiers (EDFAs) because EDFAs require optical isolators to eliminate signal reflection [3]-[5]. The returning backscattered light generated by the forward traveling probe pulse is blocked by optical isolators in each EDFA.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132674070","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
Widely Tunable Actively Modelocked Erbium Fibre Ring Laser 宽可调谐主动锁模铒光纤环形激光器
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.thb4
T. Pfeiffer, H. Schmuck
{"title":"Widely Tunable Actively Modelocked Erbium Fibre Ring Laser","authors":"T. Pfeiffer, H. Schmuck","doi":"10.1364/oaa.1991.thb4","DOIUrl":"https://doi.org/10.1364/oaa.1991.thb4","url":null,"abstract":"Erbium fibre lasers offer a large variety of features such as large tuning range /1/, high output power /1/, modelocking at repetition rates beyond 10 GHz /2/, Q-switching /3/ and single longitudinal mode opera tion /4/. In this paper we present a 980 nm laser diode pumped erbium-doped fibre ring laser that combines a large tuning range of 33 nm with picosecond pulse generation by active modelocking at repetition rates up to 6 GHz.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124002771","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
Multichannel amplification characteristics of saturated erbium-doped fiber amplifiers 饱和掺铒光纤放大器的多通道放大特性
Optical Amplifiers and Their Applications Pub Date : 1992-05-22 DOI: 10.1364/oaa.1991.thb2
Y. Cheng, N. Kagi, A. Oyobe, K. Nakamura
{"title":"Multichannel amplification characteristics of saturated erbium-doped fiber amplifiers","authors":"Y. Cheng, N. Kagi, A. Oyobe, K. Nakamura","doi":"10.1364/oaa.1991.thb2","DOIUrl":"https://doi.org/10.1364/oaa.1991.thb2","url":null,"abstract":"Erbium-doped fiber amplifiers (EDFAs) are attractive for various optical fiber transmission systems and networks owing to their several advantages such as high gain and low noise. A EDFA with its high output saturation power and wide gain profile is specially suitable for wavelength-division multiplexing (WDM) applications such as multichannel CATV distribution systems [1]. In these applications, the EDFA is normally used as a post (or a booster) amplifier and operates at a saturated region. Although it has been demonstrated that the EDFA is immune to patterning effects and interchannel interference, and has low gain saturation induced crosstalk [2], [3], there is little information about effects of wavelength spacing and fiber length in a saturated EDFA for multichannel applications. In this paper, we report the experimental results on wavelength and fiber length dependence of gain for saturated EDFAs in a two-channel amplification system. The experimental results show that when an EDFA operates at the saturated region in a multichannel system, a shorter fiber length than that in single-channel should be selected to get a flat gain profile, and that the Ge/Al/Er-doped silica fiber is desirable for multichannel amplification use since a gain hole-burning is observed for the Ge/Er-doped silica fiber.","PeriodicalId":308628,"journal":{"name":"Optical Amplifiers and Their Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124192690","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
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