Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036365
A. Smiljanic, B. Loehfelm
The proposed network offers high switching capacity since it uses multiple wavelengths for the information exchange. At the same time, it implies MAC and admission control protocols almost as simple as in a single channel network. Therefore, the proposed network also offers a rich set of features: reservations with fine granularity, fast bandwidth reservations, mixing of traffic with reservations and best-effort traffic.
{"title":"Performance evaluation of optical ring network based on composite packet switching","authors":"A. Smiljanic, B. Loehfelm","doi":"10.1109/OFC.2002.1036365","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036365","url":null,"abstract":"The proposed network offers high switching capacity since it uses multiple wavelengths for the information exchange. At the same time, it implies MAC and admission control protocols almost as simple as in a single channel network. Therefore, the proposed network also offers a rich set of features: reservations with fine granularity, fast bandwidth reservations, mixing of traffic with reservations and best-effort traffic.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130061986","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}
Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036501
D. Crawford, M. Mcelhinney, R. McGowan, P. Thiagarajan, J. Cahill, S. Nelson, S. Olson, P. Pedersen, C. Lennon
A 2-dimensional waveguide model was successfully implemented to maximize the kink-free power from 980 nm pump lasers. Additionally, we show that high quality single crystal mirrors can be deposited epitaxially by MBE to eliminate COMD as a failure mode in these devices. Using state of the art manufacturing and packaging capabilities, the high power chip has been incorporated into the design of a high power wavelength stabilized 980 nm pump laser module. A typical curve showing fiber coupled power as a function of drive current for this family of laser modules is shown.
{"title":"Design and performance of 980 nm pump laser modules exhibiting greater than 400 mW kink-free fiber-coupled power","authors":"D. Crawford, M. Mcelhinney, R. McGowan, P. Thiagarajan, J. Cahill, S. Nelson, S. Olson, P. Pedersen, C. Lennon","doi":"10.1109/OFC.2002.1036501","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036501","url":null,"abstract":"A 2-dimensional waveguide model was successfully implemented to maximize the kink-free power from 980 nm pump lasers. Additionally, we show that high quality single crystal mirrors can be deposited epitaxially by MBE to eliminate COMD as a failure mode in these devices. Using state of the art manufacturing and packaging capabilities, the high power chip has been incorporated into the design of a high power wavelength stabilized 980 nm pump laser module. A typical curve showing fiber coupled power as a function of drive current for this family of laser modules is shown.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130139012","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}
Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036179
V. Achanta, H. Yoshida, T. Mozume, T. Simoyama, H. Ishikawa
We optimized a cTQW structure for both switching energy and response time using InGaAs/AlAs/AlAsSb material system. In such a structure, we expect switching energy to be in the range of a few 100s to a few 10s of fJ (few 10s of nW) depending on the growth optimization. We estimated the LO-phonon assisted relaxation time to be about 500 fsec (switching speeds exceeding 1THz) with multi-wavelength applicability. This low energy and high speed QW structure is ideal for realizing highly efficient gate switch for futuristic all-optical communication networks with bit rates exceeding few 100 Gb/s.
{"title":"Sb-based coupled quantum wells for efficient broadband intersubband all-optical switches","authors":"V. Achanta, H. Yoshida, T. Mozume, T. Simoyama, H. Ishikawa","doi":"10.1109/OFC.2002.1036179","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036179","url":null,"abstract":"We optimized a cTQW structure for both switching energy and response time using InGaAs/AlAs/AlAsSb material system. In such a structure, we expect switching energy to be in the range of a few 100s to a few 10s of fJ (few 10s of nW) depending on the growth optimization. We estimated the LO-phonon assisted relaxation time to be about 500 fsec (switching speeds exceeding 1THz) with multi-wavelength applicability. This low energy and high speed QW structure is ideal for realizing highly efficient gate switch for futuristic all-optical communication networks with bit rates exceeding few 100 Gb/s.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131063860","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}
Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036205
Masaaki Sobe, Y. Yano
We proposed Raman gain slope measurement method by measuring noise power originated from Raman gain, and pump power adjustment to flatten the gain on various transmission lines by using measured Raman gain slope. We also proposed the technique to vary average gain with flattened profile. Using the techniques, Raman gain profile could be automatically controlled at various average gains according to the characteristics of fibers and the amount of plant loss, without trial and error, as well as without probe signals. As a result, the DAR has come to be free from the troublesome trial and error adjustment onsite, even on various installation conditions.
{"title":"Automatic pump power adjustment for gain-flattened multi-wavelength pumped Raman amplifier","authors":"Masaaki Sobe, Y. Yano","doi":"10.1109/OFC.2002.1036205","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036205","url":null,"abstract":"We proposed Raman gain slope measurement method by measuring noise power originated from Raman gain, and pump power adjustment to flatten the gain on various transmission lines by using measured Raman gain slope. We also proposed the technique to vary average gain with flattened profile. Using the techniques, Raman gain profile could be automatically controlled at various average gains according to the characteristics of fibers and the amount of plant loss, without trial and error, as well as without probe signals. As a result, the DAR has come to be free from the troublesome trial and error adjustment onsite, even on various installation conditions.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125661296","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}
Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036788
L. Moller, S. Chandrasekhar, J. Sinsky, L. Buhl
We successfully demonstrated a novel type of RZ data receiver that is based on multi-sampling and logical OR operations (OR-RZ receiver). It has superior performance compared to a standard receiver when the signal is distorted by timing fitter and advantages in case of PMD corrupted signals.
{"title":"Novel RZ receivers with enhanced jitter and PMD tolerance","authors":"L. Moller, S. Chandrasekhar, J. Sinsky, L. Buhl","doi":"10.1109/OFC.2002.1036788","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036788","url":null,"abstract":"We successfully demonstrated a novel type of RZ data receiver that is based on multi-sampling and logical OR operations (OR-RZ receiver). It has superior performance compared to a standard receiver when the signal is distorted by timing fitter and advantages in case of PMD corrupted signals.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130619145","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}
Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036700
R. Gaudino, A. Carena, V. Ferrero
In all the considered situations, even with gain locking turned on, the power per channel P/sub ch/ should always be kept below approximately -22 dBm, corresponding to a total useful EDFA output power of +4 dBm, a much lower level than the EDFA nominal output saturation power (16 dBm). Efficient gain locking is thus a fundamental issue in any true packet optical network.
{"title":"System impact of EDFA gain fluctuation in WDM optical packet networks","authors":"R. Gaudino, A. Carena, V. Ferrero","doi":"10.1109/OFC.2002.1036700","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036700","url":null,"abstract":"In all the considered situations, even with gain locking turned on, the power per channel P/sub ch/ should always be kept below approximately -22 dBm, corresponding to a total useful EDFA output power of +4 dBm, a much lower level than the EDFA nominal output saturation power (16 dBm). Efficient gain locking is thus a fundamental issue in any true packet optical network.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132408568","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}
Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036707
W. Hung, Kit H. Chan, L. Chen, Chun-Kit Chan, F. Tong
In future optical label switching (OLS) network, optical layer routing loop control is crucial for maintaining the network stability. In this paper, an optical loop control scheme using optical time to live (TTL) count down is proposed and experimentally demonstrated for the first time. Asynchronous TTL count-down up to 24 bits for 20-Gb/s packets is demonstrated.
在未来的光标签交换(OLS)网络中，光层路由环路控制是保证网络稳定性的关键。本文提出了一种利用TTL (optical time to live)倒计时的光环路控制方案，并首次进行了实验验证。演示了20gb /s数据包的异步TTL倒计时高达24位。
{"title":"A routing loop control scheme in optical layer for optical packet networks","authors":"W. Hung, Kit H. Chan, L. Chen, Chun-Kit Chan, F. Tong","doi":"10.1109/OFC.2002.1036707","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036707","url":null,"abstract":"In future optical label switching (OLS) network, optical layer routing loop control is crucial for maintaining the network stability. In this paper, an optical loop control scheme using optical time to live (TTL) count down is proposed and experimentally demonstrated for the first time. Asynchronous TTL count-down up to 24 bits for 20-Gb/s packets is demonstrated.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132012776","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}
Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036645
P. Westbrook, K. Feder, P. Reyes, P. Steinvurzel, B. Eggleton, R.G. Ernst, L. Reith, D. Gill
In summary we have demonstrated a fiber Bragg grating discriminator and tap monitor module for use in a low-chirp, high-power directly modulated RZ source at 10 Gb/s for ultra-long haul DWDM transmission systems. The fiber gratings provide both pulse shaping and wavelength locking capability in a compact all-fiber design.
{"title":"Application of fiber Bragg grating filter/tap module to a wavelength-locked low-chirp directly-modulated 10 Gb/s RZ transmitter","authors":"P. Westbrook, K. Feder, P. Reyes, P. Steinvurzel, B. Eggleton, R.G. Ernst, L. Reith, D. Gill","doi":"10.1109/OFC.2002.1036645","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036645","url":null,"abstract":"In summary we have demonstrated a fiber Bragg grating discriminator and tap monitor module for use in a low-chirp, high-power directly modulated RZ source at 10 Gb/s for ultra-long haul DWDM transmission systems. The fiber gratings provide both pulse shaping and wavelength locking capability in a compact all-fiber design.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127856379","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}
Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036256
H. Bulow, M. Schmidt, K. Schuh, E. Lach
A planar lightwave polarization stabilizer concept has been proposed which is based on a multi-feedback scheme providing individual and bipolar feedback signals for each of the phase shifters of the integrated optic waveguide structure. This allows for fast adaptation to changing input state of polarization and simple adaptation control. In part this feedback scheme has experimentally been confirmed by showing no receiver sensitivity degradation after stabilizing an 80 Gb/s RZ signal with changing polarization at the input port of a polarization sensitive OTDM receiver. Extension of the proposed feedback scheme to a planar PMD compensator was discussed by numerical simulation showing that pattern correlation and fast optical gates are required.
{"title":"Differential multi-feedback scheme for a fast adapting polarization stabilizer","authors":"H. Bulow, M. Schmidt, K. Schuh, E. Lach","doi":"10.1109/OFC.2002.1036256","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036256","url":null,"abstract":"A planar lightwave polarization stabilizer concept has been proposed which is based on a multi-feedback scheme providing individual and bipolar feedback signals for each of the phase shifters of the integrated optic waveguide structure. This allows for fast adaptation to changing input state of polarization and simple adaptation control. In part this feedback scheme has experimentally been confirmed by showing no receiver sensitivity degradation after stabilizing an 80 Gb/s RZ signal with changing polarization at the input port of a polarization sensitive OTDM receiver. Extension of the proposed feedback scheme to a planar PMD compensator was discussed by numerical simulation showing that pattern correlation and fast optical gates are required.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127902150","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}
Pub Date : 2002-03-17DOI: 10.1109/OFC.2002.1036681
K. Ho, J. Kahn
In conclusion, constant-intensity modulation eliminates the effects of both self phase modulation (SPM) and cross phase modulation (XPM), potentially increasing the limits to spectral efficiency in WDM systems. In the linear regime at high SNR, the spectral efficiency of constant-intensity modulation is 1.1 bit/s/Hz larger than half the Shannon limit. In practice, the improvement yielded by constant-intensity over unconstrained modulation formats depends on the relative strengths of XPM and FWM. A representative 10 span WDM system shows an improvement from 2.3 to 2.8 bit/s/Hz.
{"title":"Channel capacity of WDM systems using constant-intensity modulation formats","authors":"K. Ho, J. Kahn","doi":"10.1109/OFC.2002.1036681","DOIUrl":"https://doi.org/10.1109/OFC.2002.1036681","url":null,"abstract":"In conclusion, constant-intensity modulation eliminates the effects of both self phase modulation (SPM) and cross phase modulation (XPM), potentially increasing the limits to spectral efficiency in WDM systems. In the linear regime at high SNR, the spectral efficiency of constant-intensity modulation is 1.1 bit/s/Hz larger than half the Shannon limit. In practice, the improvement yielded by constant-intensity over unconstrained modulation formats depends on the relative strengths of XPM and FWM. A representative 10 span WDM system shows an improvement from 2.3 to 2.8 bit/s/Hz.","PeriodicalId":347952,"journal":{"name":"Optical Fiber Communication Conference and Exhibit","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131701503","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}
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