{"title":"Comparison of C-band and L-band WDM-PON systems performance with PAM-4 modulation format","authors":"S. Spolitis, I. Kurbatska, V. Bobrovs","doi":"10.1109/FOAN.2017.8215251","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215251","url":null,"abstract":"This paper evaluates the impact of the optical and electrical filtering on the performance of wavelength-division-multiplexed passive optical network (WDM-PON) transmission system with four-level pulse amplitude modulation (PAM-4) format and 40 Gbit/s (20 Gbaud/s) per-channel data rate for the optical C and L frequency bands. Paper determines the combination of the implemented electrical and optical filters bandwidth, which ensures transmission with minimal bit error ratio (BER) as well as with minimal received optical signal power. Obtained results revealed that filters' bandwidth optimization has similar effect on the PAM-4 signal transmission in optical C and L bands. However, the utilization of the L-band frequencies instead of the C-band frequencies leads to the decrease of the transmission quality, reduction of the maximal provided transmission distance as well as to the increase of the minimal received optical signal power required to provide transmission with BER<1∗10−3.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115389403","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}
{"title":"Optical access networks deployment in Croatian telecommunications market","authors":"Damir Breskovic, Mladen Sikirica, D. Begusic","doi":"10.1109/FOAN.2017.8215257","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215257","url":null,"abstract":"This paper gives an overview and background of optical access network deployment in Croatia. The most commonly used architectural solutions have been described. Optical access network development in Croatia has been put into a global as well as in the European Union context. All the challenges and the driving factors for optical access networks deployment are considered. Optical access network architectures that have been deployed by most of the investors in Croatian telecommunication market are presented, as well as the architectures that are in early phase of deployment.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125751871","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}
J. Velásquez, J. Tabares, I. Cano, V. Polo, J. Prat
{"title":"Coherent Nyquist UDWDM-PON with 2.5 Gb/s/user and 15 dB differential link-loss","authors":"J. Velásquez, J. Tabares, I. Cano, V. Polo, J. Prat","doi":"10.1109/FOAN.2017.8215249","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215249","url":null,"abstract":"Coherent ultra-dense wavelength division multiplexing (UDWDM) architecture constitutes an approach to serve hundreds of users in a passive optical network (PON) with high spectrum efficiency. We propose and experimentally test a directly phase modulated distributed feedback (DFB) laser with a Nyquist shaped beat signal. An Rx sensitivity of −44 dBm at BER=10e-3 is achieved for dedicated 2.5 Gb/s/user in only 6.25 GHz spaced. Even more, the proposed technique tolerates a differential link-loss of 15 dB.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126931501","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}
T. Horváth, P. Munster, Patrik Cymorek, V. Oujezský, J. Vojtěch
{"title":"Implementation of NG-PON2 transmission convergence layer into OPNET modeler","authors":"T. Horváth, P. Munster, Patrik Cymorek, V. Oujezský, J. Vojtěch","doi":"10.1109/FOAN.2017.8215254","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215254","url":null,"abstract":"Passive optical networks are the most promising solution for access networks. Nowadays, Gigabit passive optical networks are very popular for Internet services providers. These networks have currently been limited by transmission speeds (up to 2.5 Gbit/s in downstream) which is not sufficient for all services (such as 4k video transfer etc.) because this speed is shared with all users in the network. NG-PON2 standard is the latest standard with transmission speed up to 40 Gbit/s in downstream and 10 Gbit/s for upstream direction. This article deals with an implementation of transmission convergence layer of these networks into OPNET Modeler tool. OPNET Modeler does not include optical networks components. We implemented all necessary components and active elements for static bandwidth allocation. Our results confirm that ONUs share 125 ms grant. The active components can be changed to comply with other passive optical network standards.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115586520","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}
{"title":"Feasibility of piezoelectric energy harvesting chip based sensor for human physical activity monitoring","authors":"Takashi Kawashima, Y. Taniura, K. Oguchi","doi":"10.1109/FOAN.2017.8215253","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215253","url":null,"abstract":"This research experimentally reveals a sensor application in a future home in the IoE era that the possibility of using piezoelectric energy harvesting chips placed under the shoe insole for sensing foot pressure, or human activity while walking. Commercially available flat type piezoelectric PVDF polymer film chips were used for experiments. Two experiments are conducted: i) output voltage vs. chip bending, and ii) output signal captured by chips under insole while walking. Results obtained are; for i), output voltage measured was 0.09–0.17 V peak average increase per one mm deformation. Output was basically linear to the amount of deformation. However, its characteristics depend on the chip. And, ii) found that higher speeds yielded higher counts over the threshold signal level that might correspond to the activity level. Therefore, a piezoelectric energy harvesting chip was found to be feasible as a human activity sensor with less energy.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130374542","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}
P. Munster, T. Horváth, P. Sysel, J. Vojtěch, R. Velc
{"title":"Comparison of interferometry based and polarization based sensing systems for use in fiber infrastructure protection","authors":"P. Munster, T. Horváth, P. Sysel, J. Vojtěch, R. Velc","doi":"10.1109/FOAN.2017.8215255","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215255","url":null,"abstract":"Almost all data transmissions over long distances are transmitted through optical fibers. Fiber infrastructure is therefore very important and is necessary to protect it against fiber cuts caused e.g. by digging activity. Many network operators seeking appropriate solution for self protecting infrastructure system. We performed comparative measurement of the polarization based sensing system and the interferometry based sensing system to determine the sensitivity and accuracy of both systems. The results confirmed theoretical assumptions that both systems are suitable for strain measurement and the interferometry based sensing systems are more sensitive.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134574411","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}
Yi-Chia Ting, Hsiang Wang, Tsung-Yu Lu, Chia-Ju Lin, S. Liaw, Ren-Young Liu, C. Shin
{"title":"Ultra low thermal coefficient broadband super-fluorescent fiber source with radiation insensitivity characteristic","authors":"Yi-Chia Ting, Hsiang Wang, Tsung-Yu Lu, Chia-Ju Lin, S. Liaw, Ren-Young Liu, C. Shin","doi":"10.1109/FOAN.2017.8215250","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215250","url":null,"abstract":"In this paper, an Erbium-doped fiber-based, broadband super-fluorescent fiber source (SFS) is proposed and demonstrated. Using a broadband fiber Bragg grating (BFBG) with temperature compensated by attaching it upon a carbon fiber composite, it has a very low mean wavelength drift of 1.26 ppm/°C in temperature range 0 °C to 60 °C. The fluorescent fiber source structure is designed in a double-pass backward pumping structure to increase the amplified spontaneous emission (ASE) power. The output power variation in the whole ambient temperature range is only 0.42 dB and the average 3 dB bandwidth is 17.05 nm. In Gamma radiation experiment using 60CO y ray, the broadband super-fluorescent source may have the photo-annealing effect to reduce the radiation induced attenuation (RIA) effect. The output power is 9.63 dBm with 3 dB bandwidth of 16.8 nm for the super-fluorescent fiber source from 0 to 30 Krad of 60CO y ray radiation. The overall bandwidth variation is only 0.7%. The SFS structure we proposed is wavelength and power stable with characteristic of radiation insensitive. It is promising to be used as light source for fiber optic gyroscope.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117126274","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}
{"title":"Copper transmission for multi-gigabit hybrid copper-fiber access networks","authors":"Rainer Strobel","doi":"10.1109/FOAN.2017.8215256","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215256","url":null,"abstract":"A high performance copper-based transmission technology can enable fiber to the building and fiber to the home installations in a cost-effective copper/fiber hybrid network [1]. ITU has started a project for multi-gigabit copper access (MGfast [2]), as a successor of the G.fast [3] technology with the goal to serve symmetric services with 10 Gbit/s aggregated rate for each subscriber. This paper discusses network topologies for the hybrid network and technology options for copper transmission to achieve the target rate and reach. Possible approaches are channel bonding, full duplex transmission and an increase of the used bandwidth from 212 MHz in G.fast to 424 MHz or 848 MHz.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123647026","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}
H. L. Ynoquio, R. G. Leibel, G. Amaral, J. P. von der Weid, P. Urban
{"title":"Linearised electro-optical modulation under concurrent transmissions separated by a wide frequency span","authors":"H. L. Ynoquio, R. G. Leibel, G. Amaral, J. P. von der Weid, P. Urban","doi":"10.1109/FOAN.2017.8215248","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215248","url":null,"abstract":"Analog Radio-over-Fiber (a-RoF) has been the subject of increased interest in relation to next-generation optical networks due to its spectral efficiency and lower deployment cost. Nonetheless, some complexity arises from electro-optical conversion of the information signal due to the non-linear characteristic of the modulator's transfer function which causes inter-channel interference and poses a severe limitation to achievable error-free transmission. Furthermore, Harmonics Distortion (HD) resulting from employment of a high modulation depth may restrict the availability of clear frequencies for transmission of concurrent data. In this work, second and third order distortions have been optically compensated by a feed forward technique when one of two concurrent data transmission carriers occupies the same band as the other's second harmonic. Distortions reduction in both channels simultaneously results in up to 9 dB EVM improvement, which can extend the error-free range of a-RoF transmission up to 45 km.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"11 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123631640","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}
{"title":"What does mean adaptive sleep cycle in energy efficient optical access network?","authors":"B. Pajc̆in, P. Matavulj, M. Radivojevic","doi":"10.1109/FOAN.2017.8215252","DOIUrl":"https://doi.org/10.1109/FOAN.2017.8215252","url":null,"abstract":"In order to manage Quality of Service (QoS) and energy efficiency in the optical access network, an online Dynamic Bandwidth Allocation (DBA) algorithm with adaptive sleep cycle is presented. This DBA algorithm has the ability to allocate an additional bandwidth to the end user within a single sleep cycle whose duration changes depending on the current buffers occupancy. The purpose of this DBA algorithm is to tune the duration of the sleep cycle depending on the network load in order to provide service to the end user without violating strict QoS requests in all network operating conditions. In conditions of increased network load, the DBA algorithm initiates a decrease in the duration of the sleep cycle, which results in less energy savings. Under low load conditions, an increase in the duration of the sleep cycle results in significant energy savings, while QoS is still maintained.","PeriodicalId":352507,"journal":{"name":"2017 International Workshop on Fiber Optics in Access Network (FOAN)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126116607","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}