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ASAKA Kota

Profile Research field Research achievement Educational achievement Social contribution achievement

 

Books etc  
No.TitleAutour TypePublisherPublication dateRangeISBN
1SDN Enabled Broadband Access (SEBA) Reference Design v2.0 (ONF TS-103) Joint Work Open Networking Foundation (ONF) Mar. 2021  
2SDN Enabled Broadband Access (SEBA) Reference Design v1.0 (ONF TS-100) Joint Work Open Networking Foundation (ONF) Mar. 18, 2019  
3BBF TR-403 "PON Abstraction Interface for Time-Critical Applications" Editor Broadband Forum (BBF) Dec. 2018 Editor  
4BBF TR-402 "Functional Model for PON Abstraction Interface" Editor Broadband Forum (BBF) Oct. 2018 Editor  
5ITU-T G.989.1 Amendment 1 "40-Gigabit-capable passive optical networks (NG-PON2): General requirements" Editor ITU-T Aug. 2015 Editor  

 

Published Papers  
No.TitleJournalVolNoStart PageEnd PagePublication dateDOIReferee
1Proactive congestion control by fast optical switching within 1-ms delay at mobile backhaul utilizing traffic data volume IEICE Communications Express (Accepted, to be published) Jul. 2024  Refereed 
2Novel Micro-Burst Detection Method in Access/Edge Networks Using Periodic IoT Messages IEICE Communications Express 13 101 105 Apr. 2024 https://doi.org/10.23919/comex.2023xbl01741Refereed 
3Proactive congestion control within 1-ms delay at mobile midhaul utilizing parallel traffic prediction and fast switchover of CU and optical path Optical Fiber Communication Conference (OFC) 2024 M4D.3 Mar. 2024  Refereed 
4First Demonstration of Cross-domain Real-time Control between Networks and Computing Resources Utilizing Cooperative SLA Analysis The 48th European Conference and Exhibition on Optical Communication (ECOC2023) We.B.5.4 Oct. 2023  Refereed 
5SLA-aware Real-time Control Technology for All Photonics Network and Beyond (Invited) 2023 Opto-Electronics and Communications Conference (OECC) OECC2023-0220-2 Jul. 2, 2023 https://doi.org/10.1109/oecc56963.2023.102098571Refereed 
6Automatic fast failure restoration on software-defined optical switch controller with NETCONF/RESTCONF for all-photonics network IEICE Communications Express 11 11 709 714 Nov. 2022 https://doi.org/10.1587/comex.2022xbl01161Refereed 
7First Demonstration of Real-Time Optical Path Control Scheme with AMCC Telemetry 2022 European Conference on Optical Communication (ECOC) Sep. 2022  Refereed 
8[Invited Paper] PON Virtualization Including PHY Softwarization Optical Fiber Communication Conference (OFC) 2022 W3G.3 Mar. 2022 https://doi.org/10.1364/ofc.2022.w3g.31Refereed 
9[Invited Paper] SLA-aware Real Time Control Technology across Optical and Mobile Networks Optical Fiber Communication Conference (OFC) 2022 M3A.4 Mar. 2022 https://doi.org/10.1364/ofc.2022.m3a.41Refereed 
10Guest Editorial: Enhanced Fronthaul for 5G and beyond IEEE Wireless Communications 29 2022 https://doi.org/10.1109/MWC.2022.98017291
11Demonstration of IEEE PON Abstraction for SDN Enabled Broadband Access (SEBA) Journal of Lightwave Technology 39 20 6434 6442 Oct. 2021 https://doi.org/10.1109/jlt.2021.31042981Refereed 
12Zero touch provisioning compliant with authentications of IEEE PON packages A and B for SDN-enabled broadband access Journal of Optical Communications and Networking 13 11 244 252 Jul. 2021 https://doi.org/10.1364/jocn.4284711Refereed 
13Redesigned TDM-PON System Architecture Based on Point-to-Point Ethernet Transmission and Software Processing With General-Purpose Hardware Journal of Lightwave Technology 39 448 457 Jan. 2021 https://doi.org/10.1109/jlt.2020.30279151Refereed 
14[Invited] DBA dis-aggregation in PON-OLT with scalability enhancement by REPORT/GATE compression Journal of Optical Communications and Networking 13 A13 A20 Oct. 2020 https://doi.org/10.1364/jocn.4028131Refereed 
15[Invited] Future optical access network enabled by modularization and softwarization of access and transmission functions Journal of Optical Communications and Networking 12 D48 D56 Jun. 2020 https://doi.org/10.1364/jocn.3915441Refereed 
16Automated provisioning method for a modular PON-OLT device toward plug & provision Journal of Optical Communications and Networking 12 D9 D16 May. 2020 https://doi.org/10.1364/jocn.3909011Refereed 
17Modularization and Softwarization Technologies in Optical Access Network System 48 136 140 May. 2020  Refereed 
18Mini-PON: disaggregated module-type PON architecture for realizing various PON deployments Journal of Optical Communications and Networking 12 89 89 Mar. 2020 https://doi.org/10.1364/jocn.3837171Refereed 
19Two-stage Abstraction for Disaggregated Modular OLT Architecture Supporting OpenFlow Control Optical Fiber Communication Conference (OFC) 2020 M1K.2 Mar. 2020 https://doi.org/10.1364/ofc.2020.m1k.21Refereed 
20[Invited Paper] Softwarized and Open OLT Architecture for Flexible Optical Access Network Optical Fiber Communication Conference (OFC) 2020 M1K.4 Mar. 2020 https://doi.org/10.1364/ofc.2020.m1k.41Refereed 
21First demonstration of mini-PON by using standard-based DBA-API and software components on commodity server apart from modular OLT 45th European Conference on Optical Communication (ECOC 2019) Sep. 2019 https://doi.org/10.1049/cp.2019.09051Refereed 
22FASA®: New access system architecture NTT Technical Review 17 2019  
23[Invited] Disaggregation of Time-Critical Applications in Flexible Access System Architecture Journal of Optical Communications and Networking 11 A33 A39 Oct. 2018 https://doi.org/10.1364/jocn.11.000a331Refereed 
24[Invited] Flexible Access System Architecture (FASA) to Support Diverse Requirements and Agile Service Creation Journal of Lightwave Technology 36 1510 1515 Apr. 2018 https://doi.org/10.1109/jlt.2017.27876441Refereed 
25[Highly scored paper, Invited] Novel Automatic Service Restoration Technique by Using Self-Reconfiguration of Network Resources for a Disaster-struck Metro-Access Network Journal of Lightwave Technology 36 1516 1523 Apr. 2018 https://doi.org/10.1109/jlt.2017.27879991Refereed 
26[Invited] Flexible Access System Architecture (FASA) Optical Fiber Communication Conference 2018 Tu3L.7 Mar. 2018 https://doi.org/10.1364/ofc.2018.tu3l.71Refereed 
27Reverse Bias Voltage Controlled Burst-Mode Booster SOA in λ-Tunable ONU Transmitter for High-Split-Number TWDM-PON Journal of Optical Communications and Networking 10 431 439 Mar. 2018 https://doi.org/10.1364/jocn.10.0004311Refereed 
28[Highly ranked paper] First-time Demonstration of Automatic Service Restoration by Using Inter-Central-Office OLT handover and Optical Path Switching in Metro-Access Network 2017 European Conference on Optical Communication (ECOC) Sep. 2017 https://doi.org/10.1109/ecoc.2017.83462341Refereed 
29[Invited] Flexible Access System Architecture to Support Diverse Requirements and Agile Service Creation 2017 European Conference on Optical Communication (ECOC) Sep. 2017 https://doi.org/10.1109/ecoc.2017.83462321Refereed 
30Fairness-Aware Dynamic Sub-Carrier Allocation in Distance-Adaptive Modulation OFDMA-PON for Elastic Lambda Aggregation Networks Journal of Optical Communications and Networking 616 624 Jun. 2017 https://doi.org/10.1364/jocn.9.0006161Refereed 
31Real-time Demonstration of Fairness-aware Dynamic Subcarrier Allocation for Adaptive Modulation in Elastic Lambda Aggregation Network Optical Fiber Communication Conference 2017 Th2A.31 Mar. 2017 https://doi.org/10.1364/ofc.2017.th2a.311Refereed 
32[Invited] Dynamic Wavelength Allocation and Rapid Wavelength Tuning for Load Balancing in λ-tunable WDM/TDM-PON Optical Fiber Communication Conference 2017 M3I.1 Mar. 2017 https://doi.org/10.1364/ofc.2017.m3i.11Refereed 
33Demonstration of NG-PON2 Coexisting with Other Systems on Same ODN by Using WDM filter with Low Power Penalty of under 1.0 dB ECOC 2016; 42nd European Conference on Optical Communication Sep. 2016  Refereed 
34[Invited] Tunable optical technologies for next generation optical access system 2016 21st OptoElectronics and Communications Conference (OECC) held jointly with 2016 International Conference on Photonics in Switching (PS) Jul. 2016  Refereed 
35Hitless λ-Tuning Sequence to Reduce Tuning Delay in λ-Tunable WDM/TDM-PON Journal of Optical Communications and Networking 486 494 Jun. 2016 https://doi.org/10.1364/jocn.8.0004861Refereed 
36[Invited, Post deadline] Field Trial of Long-Reach and High-Splitting λ-Tunable TWDM-PON Journal of Lightwave Technology 34 213 221 Jan. 2016 https://doi.org/10.1109/jlt.2015.24946061Refereed 
37Standardization trends of optical access systems Journal of the Institute of Electronics, Information and Communication Engineers 99 2016  
38[Invited] Physical Layer Aspects of NG-PON2 Standards—Part 2: System Design and Technology Feasibility Journal of Optical Communications and Networking 43 52 Dec. 2015 https://doi.org/10.1364/jocn.8.0000431Refereed 
39Optical path protection with FEC switching in WDM/TDM-PON for ring access networks 2015 European Conference on Optical Communication (ECOC) Sep. 2015 https://doi.org/10.1109/ecoc.2015.73418171Refereed 
40[Invited] In-service wavelength tuning technology in WDM/TDM-PONs for multiple-service convergence 2015 European Conference on Optical Communication (ECOC) Sep. 2015 https://doi.org/10.1109/ecoc.2015.73419341Refereed 
41High output power OLT/ONU transceivers for 40 Gbit/s symmetric-rate NG-PON2 systems 2015 European Conference on Optical Communication (ECOC) Sep. 2015 https://doi.org/10.1109/ecoc.2015.73416591Refereed 
42Burst-Off-Level Power Reduction in λ-Tunable Transmitter Using a Reverse Bias Voltage Controlled Burst-Mode Booster SOA for 256-Split WDM/TDM-PON Optical Fiber Communication Conference 2015 Tu3E.8 Mar. 2015 https://doi.org/10.1364/ofc.2015.tu3e.81Refereed 
43Consideration of tunable components for next-generation passive optical network stage 2 Journal of Lightwave Technology 33 1072 1076 Mar. 2015 https://doi.org/10.1109/JLT.2015.23907731Refereed 
44[Post deadline paper] First Field Trial of 40-km Reach and 1024-Split Symmetric-Rate 40-Gbit/s λ-tunable WDM/TDM-PON 2015 Optical Fiber Communication Conference Post Deadline Papers Th5A.6 Mar. 2015 https://doi.org/10.1364/ofc.2015.th5a.61Refereed 
45High Output Power and Burst Extinction Ratio λ-Tunable ONU Transmitter Using Burst-Mode Booster SOA for WDM/TDM-PON Journal of Optical Communications and Networking Dec. 2014 https://doi.org/10.1364/jocn.7.0000011Refereed 
46[Invited] What will be killer devices and components for NG-PON2? 2014 The European Conference on Optical Communication (ECOC) Sep. 2014 https://doi.org/10.1109/ecoc.2014.69642111Refereed 
47First demonstration of burst-mode upstream transmission for digital coherent OFDM-PON 2014 OptoElectronics and Communication Conference and Australian Conference on Optical Fibre Technology 925 927 Jul. 2014  Refereed 
48High Output Power and Burst Extinction Ratio ONU Using a Simple Configuration Booster SOA with Gain Peak Detuning for WDM/TDM-PON Optical Fiber Communication Conference 2014 W3G.7 Mar. 2014 https://doi.org/10.1364/ofc.2014.w3g.71Refereed 
49Energy efficient IM-DD OFDM-PON using dynamic SNR management and adaptive modulation Optics Express 22 1789 1789 Jan. 2014 https://doi.org/10.1364/oe.22.0017891Refereed 
50100-ns -selective Burst-Mode Transceiver for 40-km Reach Symmetric 40-Gbit/s WDM/TDM-PON 39th European Conference and Exhibition on Optical Communication (ECOC 2013) Sep. 2013 https://doi.org/10.1049/cp.2013.13281Refereed 
51[Invited] Long-Reach λ-Tunable WDM/TDM-PON Using Synchronized Gain-Clamping SOA Technology Journal of Optical Communications and Networking 10 A144 A144 Sep. 2013 https://doi.org/10.1364/jocn.5.00a1441Refereed 
52First Demonstration of Energy Efficient IM-DD OFDM-PON using Dynamic SNR Management and Adaptive Modulation 39th European Conference and Exhibition on Optical Communication (ECOC 2013) Sep. 2013 https://doi.org/10.1049/cp.2013.14961Refereed 
53Small and Low-Cost Dual-Rate Optical Triplexer for OLT Transceivers in 10G/1G Co-existing 10G-EPON Systems IEICE Transactions on Electronics E96.C 996 1002 Jul. 2013 https://doi.org/10.1587/transele.e96.c.9961Refereed 
5410Gb/s BOSA Employing Low-Cost TO CAN Package and Impedance Matching Circuits in Transmitter IEICE Transactions on Electronics E96.C 989 995 Jul. 2013 https://doi.org/10.1587/transele.e96.c.9891Refereed 
5516QAM Signal Transmission Experiment for Dynamic SNR Management on IM-DD OFDM-PON 2013 18th OptoElectronics and Communications Conference held jointly with 2013 International Conference on Photonics in Switching WP2_2 Jul. 2013 https://doi.org/10.1364/oecc_ps.2013.wp2_21Refereed 
5640-km Reach Symmetric 40-Gbit/s λ-tunable WDM/TDM-PON Using Synchronized Gain-Clamping SOA Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2013 OW4D.6 Mar. 2013 https://doi.org/10.1364/ofc.2013.ow4d.61Refereed 
57Small and low-cost dual-rate optical triplexer for 10G-EPON OLT transceivers 2012 17th Opto-Electronics and Communications Conference 77 78 Jul. 2012 https://doi.org/10.1109/oecc.2012.62763791Refereed 
58Low-cost and small BOSA employing impedance matching circuits for 10G-EPON 2012 17th Opto-Electronics and Communications Conference 81 82 Jul. 2012 https://doi.org/10.1109/oecc.2012.62763811Refereed 
59Isolator-free EA-DFB module with forward error correction 2012 17th Opto-Electronics and Communications Conference 853 854 Jul. 2012 https://doi.org/10.1109/oecc.2012.62766631Refereed 
60Novel optical Triplexer for 1OG-EPON OLT transceiver Proceedings of 2010 15th OptoElectronics and Communications Conference, Sapporo, Japan. 844 845 Jul. 2010  Refereed 
61Large optical power margin of signal light in OFDR-OCT by using semiconductor optical amplifier Proc. SPIE 6847, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XII, 684711 Feb. 2008 https://doi.org/10.1117/12.7650381Refereed 
62Dispersion matching of sample and reference arms in optical frequency domain reflectometry-optical coherence tomography using a dispersion-shifted fiber Optics Express 15 5030 5030 Apr. 2007 https://doi.org/10.1364/oe.15.0050301Refereed 
63Dispersion compensation in OFDI-OCT by using dispersion shifted fiber Proc. SPIE 6429, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI, 642926 Feb. 2007 https://doi.org/10.1117/12.7029541
64Discretely swept optical-frequency domain imaging toward high- resolution, high-speed, high-sensitivity and long-depth-range Proc. SPIE 6429, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI, 64291G Feb. 2007 https://doi.org/10.1117/12.7039631Refereed 
65Enhancement of OFDR-OCT sensitivity using semiconductor optical amplifier Proc. SPIE 6429, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine XI, 64291I Feb. 2007 https://doi.org/10.1117/12.7037451Refereed 
66Improved Sensitivity of Optical Frequency Domain Reflectometry-Optical Coherence Tomography Using a Semiconductor Optical Amplifier Japanese Journal of Applied Physics 45 No. 49 L1317 L1319 Dec. 2006 https://doi.org/10.1143/jjap.45.l13171Refereed 
67Low Thermal Resistance of 1.55-μm Buried-Heterostructure VCSEL on GaAs/AlAs DBR The 10th OptoElectronics and Communication Conference (OECC2005), Seoul, Korea. 6F3-3 Jul. 2005  Refereed 
68Improvement in Threshold Voltage of 1.55-µm Buried-Heterostructure Vertical-Cavity Surface-Emitting Laser Japanese Journal of Applied Physics 44 4L L552 L554 Apr. 1, 2005 https://doi.org/10.1143/jjap.44.l5521Refereed 
69Lossless electroabsorption modulator monolithically integrated with a semiconductor optical amplifier and a passive waveguide IEEE Photonics Technology Letters 15 679 681 May. 2003 https://doi.org/10.1109/lpt.2003.8099471Refereed 
702.5-Gb/s Operation of Monolithically Integrated Eight-Channel WDM Modulator Module with 25-GHz Channel Spacing Optical Fiber Communication Conference 2003 TuG4 Mar. 2003  Refereed 
71High extinction ratio performance of DWDM monolithic multichannel modulation circuit Electronics Letters 39 306 306 Feb. 2003 https://doi.org/10.1049/el:200301811Refereed 
72Lossless electro-absorption modulator monolithically integrated with a semiconductor optical amplifier connected by a passive waveguide Proceedings of 2001 International Laser, Lightwave and Microwave Conference (ILLMC), Shanghai, China. Laser I A-3 29 31 Nov. 2002  Refereed 
73Multi-channel modulation in a DWDM monolithic photonic integrated circuit Conference Proceedings. 14th Indium Phosphide and Related Materials Conference (Cat. No.02CH37307) 681 683 May. 2002 https://doi.org/10.1109/iciprm.2002.10146091Refereed 
74Effects of Ge doping on the fluctuative conductivity in Bi2Sr2CaCu2O8+δ Physica B: Condensed Matter 284-288 995 996 Jul. 2000 https://doi.org/10.1016/s0921-4526(99)02339-x1Refereed 
75Effects of Ge doping on the fluctuative conductivity in Bi2Sr2CaCu2O8+δ Proceedings, 22nd International Conference on Low Temperature Physics (LT 22): Espoo, Finland, August 4-11, 1999 Aug. 1999  Refereed 

 

MISC  
No.TitleJournalVolNoStart PageEnd PagePublication date
1Standardization Trends in Technologies Related to Fixed-line Networks NTT Technical Review 22 18 28 Jan. 2024 
2Low-latency Function-dedicated Network Providing Sustained and Stable Services NTT Technical Review 21 12 43 49 Dec. 2023 
3Standardization Trends in the Disaggregation Technology of Access Systems at the Broadband Forum NTT Technical Review 19 52 57 Aug. 2021 
4Standardization trends of virtualized access systems by the broadband forum NTT Technical Review 16 44 49 Jul. 2018 
5Standardization trends for future high-speed passive optical networks NTT Technical Review 15 10 Oct. 2017 
6New Access System Architecture (FASA)-enabling provision of services flexibly and promptly NTT Technical Review 14 10 Oct. 2016 
7Standardization for Next-Generation Optical Access Systems New Breeze 2015 Autumn 21 21 Oct. 2015 
8Standardization trends for next-generation passive optical network stage 2 (NG-PON2) NTT Technical Review 13 80 83 2015 

 

Conference Activities & Talks  
No.TitleConferencePublication datePromoterVenue
1[Invited] High-speed Closed-loop Control Technique across Optical, Wireless, and Computing Domains for Ensuring End-to-End Low Latency Oct. 1, 2023 
2[Invited] Use Cases and Benefits of PON Virtualization OFC2021, Panels "PON Disaggregation, from SDN Abstraction to Full Virtualization. Benefits, Obstacles and Trends" Jun. 10, 2021 
3Disaggregated DBA for Diverse Service Requirements in Mobile Fronthaul and Optical Access Systems Workshop 3 at OptoElectronics and Communication Conference (OECC) 2020, Taipei Oct. 4, 2020 
4NTT's activities in SEBA development ONF CONNECT 2019 Sep. 12, 2019 
5Workflow proposal and requirements for SEBA ONF VOLTHA Lockdown Mar. 26, 2019 
6TWDM-PON Technology and Beyond for 5G MFH Workshop W3 at OptoElectronics and Communication Conference (OECC) 2017, Singapore Aug. 2017 
7[Invited] Access Networks in Japan, Current Status and Future IEEE GLOBECOM 2015 (Workshop IF6: Optical Access Network Status and Directions) Dec. 7, 2015 
8Next-generation access network systems architecture “FASA” TM Forum Tokyo Spotlight (Workshop 2: NetroSphere Concept) Mar. 15, 2015 
9[Invited] Cost issues from an operator's viewpoint CLEO-PR & OECC/PS 2013 (Workshop SWE2-2) Jun. 2013 
10Small and Low-cost Optical Modules (BOSA and Triplexer) for 10G-EPON Applications Oct. 2012 
11Next Generation PON System Using WDM technology from the NTT's Viewpoint OptoElectronics and Communication Conference (OECC) 2012, Busan, Korea Jul. 2012 
12Fluctuation conductivity analysis for Bi2-xGexSr2Ca1Cu2O8+d single crystal Sep. 27, 1998 

 

Awards & Honors  
No.Publication dateAssociationPrizeSubtitle
1May. 2023 ITU-AJ Accomplishment Awrads 
2Sep. 2022 IEICE Communications Express ComEX Top Downloaded Letter Award Automatic Fast Failure Restoration on Software-Defined Optical Switch Controller with NETCONF/RESTCONF for All-Photonics Network 
3Sep. 2019 Broadband Forum Outstanding Contributor Award 

 

Industrial Property Rights  
No.TypeTitleApplicationIdApplicationDatePatentIdRegistration datePatentDate
1patent_right Optical wavelength selecting filter-module and optical wavelength selecting method 特願2018-241623 Dec. 25, 2018 特許US.11506883.B2 Nov. 22, 2022   
2patent_right Tunable optical filter control apparatus and tunable optical filter control method 特願2018-100064 May. 28, 2018 特許US.11258510.B2 Feb. 22, 2022   
3patent_right Information management system and information management method   特許US.11388056.B2 Jul. 12, 2022   
4patent_right Virtual subscriber line terminal station device and control method for virtual subscriber line terminal station device   特許EP.3641236.B1 Jun. 15, 2022   
5patent_right Transmission device, and transmission method   特許US.11197077.B2 Dec. 7, 2021   
6patent_right Optical transceiver and control method   特許US.10594431.B2 Mar. 17, 2020   
7patent_right Optical transceiver and control method   特許US.10536237.B2 Jan. 14, 2020   
8patent_right Station-side device and wavelength changeover method   特許EP.3270545.B1 Aug. 21, 2019   
9patent_right Station-side device and wavelength control method   特許US.10361807.B2 Jul. 23, 2019   
10patent_right Subscriber device and light receiving method   特許US.10250331.B2 Apr. 2, 2019   
11patent_right Station-side device and wavelength changeover method   特許US.10230485.B2 Mar. 12, 2019   
12patent_right Virtual subscriber line terminal station device and control method for virtual subscriber line terminal station device   特許US.10958349.B2 Jul. 19, 2018   
13patent_right Burst optical signal transmission device and control method for burst optical signal transmission device   特許US.9923637.B2 Mar. 20, 2018   
14patent_right Burst optical signal transmission device and burst optical signal transmission method   特許US.9912116.B2 Mar. 6, 2018