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Submarine Cable System - Focusing on the Link between China & Korea -

Submarine Cable System - Focusing on the Link between China & Korea -. Noriyuki Takeda and Junji Matsuda KDDI Submarine Cable Systems Inc. (KDDI-SCS). Beijing. CKC. Seoul. APCN2. C2C. KJCN. Submarine Cable Systems between Korea and China. 0.56Gbit/s x 1WDM x 2FP. Taean.

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Submarine Cable System - Focusing on the Link between China & Korea -

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  1. Submarine Cable System - Focusing on the Link between China & Korea - Noriyuki Takeda and Junji Matsuda KDDI Submarine Cable Systems Inc. (KDDI-SCS) KDDI-SCS Proprietary Use Pursuant to Company Instructions

  2. Beijing CKC Seoul APCN2 C2C KJCN Submarine Cable Systems between Korea and China 0.56Gbit/s x 1WDM x 2FP Taean Qingdao Pusan 10Gbit/s x 64WDM x 4FP Chongming 10Gbit/s x 96WDM x 8FP 10Gbit/s x 24WDM x 12FP KDDI-SCS Proprietary Use Pursuant to Company Instructions

  3. Outline 1. Introduction 2. Configuration of Submarine Cable System 3. Transmission Technologies - Experimental Results 4. How to realize the cable system between Korea and China ? - Network configuration - Cost 5. Conclusion KDDI-SCS Proprietary Use Pursuant to Company Instructions

  4. Outline 1. Introduction 2. Configuration of Submarine Cable System 3. Transmission Technologies - Experimental Results 4. How to realize the cable system between Korea and China ? - Network configuration - Cost 5. Conclusion KDDI-SCS Proprietary Use Pursuant to Company Instructions

  5. Repeaterless system and Repeater system SLTE SLTE Cable MC MC Repeaterless System SLTE : Submarine Line Terminating Equipment MC : Maintenance Controller LME : Line Monitoring Equipment PFE : Power Feeding Equipment SLTE SLTE Repeater LME PFE PFE LME Cable MC MC Repeater System KDDI-SCS Proprietary Use Pursuant to Company Instructions

  6. Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter What is “WDM” ? Wavelength Division Multiplexing Total capacity 10Gbit/s x n WDM Wavelength Optical Fiber Multiplexer Demultiplexer KDDI-SCS Proprietary Use Pursuant to Company Instructions

  7. Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Advantage of WDM : Upgrade Upgrade : - Small initial investment - Increase the system capacity when you need without changing the wet plant - After upgrade - Initial Cable capacity : 10Gbit/s x N Repeater KDDI-SCS Proprietary Use Pursuant to Company Instructions

  8. KJCN What is Maximum Number of Wavelength? 10Gbit/s per wavelength Maximum Number of Wavelength Repeater System Repeaterless System System Length [km] KDDI-SCS Proprietary Use Pursuant to Company Instructions

  9. Repeater Optical Fiber Loss (0.2dB/km) Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Why is the Number of l Limited in Repeaterless System? Power Transmitter Receiver Threshold of receiver distance KDDI-SCS Proprietary Use Pursuant to Company Instructions

  10. Cable > 3T bit/s / cable Upgrade Strategy - Repeater system - Repeaterless system l Increasing the # FP (Use the dark fibers) Increasing the # wavelength KDDI-SCS Proprietary Use Pursuant to Company Instructions

  11. Outline 1. Introduction 2. Configuration of Submarine Cable System 3. Transmission Technologies - Experimental Results 4. How to realize the cable system between Korea and China ? - Network configuration - Cost 5. Conclusion KDDI-SCS Proprietary Use Pursuant to Company Instructions

  12. Optical Booster Optical Pre-amplifier FEC FEC Remote Pump Source - Optical Booster and Preamplifier - FEC (Forward Error Correction) - Raman Amplifier - Remote EDFA Amplifier Key Technologies for Repeaterless System Number of wavelengths : 1~2 (Capacity : 10~20Gbit/s /fiber) ~16 (Capacity : ~160Gbit/s /fiber) Trans-mitter Recei-ver KDDI-SCS Proprietary Use Pursuant to Company Instructions

  13. Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Optical Fiber Multiplexer Demultiplexer Repeaterless System - 10Gbit/s x 100WDM, 200km - 100WDM 200km BER : 10-9 Spectrum after 200km transmission Transmission characteristics KDDI-SCS Proprietary Use Pursuant to Company Instructions

  14. Trans-mitter Recei-ver FEC FEC Repeater Fiber (~100km) How to transmit a large number of wavelength…….. 2. By making the wavelength spacing narrower Key Technologies for Repeater System 1. By making the signal bandwidth wider KDDI-SCS Proprietary Use Pursuant to Company Instructions

  15. Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Trans-mitter Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Recei-ver Repeater System - 10Gbit/s x 200WDM, 9200km - 200WDM 9,200km Repeater Fiber (~45km) BER BER : 10-9 with super FEC Output of Transmitter After 9,200km Transmission KDDI-SCS Proprietary Use Pursuant to Company Instructions

  16. Outline 1. Introduction 2. Configuration of Submarine Cable System 3. Transmission Technologies - Experimental Results 4. How to realize the cable system between Korea and China ? - Network configuration - Cost 5. Conclusion KDDI-SCS Proprietary Use Pursuant to Company Instructions

  17. Key Factors to Realize the System - Demand - Feasibility of transmission technologies - Location of cable landing station - Network configuration - Cost KDDI-SCS Proprietary Use Pursuant to Company Instructions

  18. Using the Existing Stations is preferable ! Comparison of New and Existing Cable Landing Station KDDI-SCS Proprietary Use Pursuant to Company Instructions

  19. Network Configuration Plan the optical cable system between Korea and China using the Existing cable landing stations. Taean (泰安) - Qingdao (青島) Distance : ~ 560km Taean : Exist. Qingdao : Exist. 560km 3 options of Network configuration KDDI-SCS Proprietary Use Pursuant to Company Instructions

  20. Option 1 Repeater System Option 2 Repeaterless System Option 3 Repeaterless System + Backhaul System Network Configuration New Station Taean : Exist. Qingdao : Exist. KDDI-SCS Proprietary Use Pursuant to Company Instructions

  21. Conditions for Cost Estimation Initial After Upgrade Note: 5 Repeaters are assumed in Repeater system (Option 1). KDDI-SCS Proprietary Use Pursuant to Company Instructions

  22. Price(M$) Cost for Initial Investment Initial KDDI-SCS Proprietary Use Pursuant to Company Instructions

  23. Price(M$) Cost for Upgrade After Upgrade (Ultimate) Initial KDDI-SCS Proprietary Use Pursuant to Company Instructions

  24. EDF for remote amplification WTU Up-stream WTU LTU with FEC for undersea cable system 1FP LTU with FEC for undersea cable system Down-stream Remote EDFPump Source Remote EDFPump Source LTU : Line Terminating Unit WTU : Wavelength Terminating Unit Up-stream Repeater WTU WTU LTU (compatible with terrestrial LTU) LTU (compatible with terrestrial LTU) 1FP Down-stream Terminal Equipment Bay Repeaterless System Repeater System KDDI-SCS Proprietary Use Pursuant to Company Instructions

  25. Twice ! The Number of Terminal Bay Repeater System LTU Bay Cable Qingdao Taean Repeaterless System Quigdao Taean New Station KDDI-SCS Proprietary Use Pursuant to Company Instructions

  26. Conclusion - Configuration for Repeater system and Repeaterless system were presented. - The three options of system between Korea and China were shown. - From the standpoint of the cable capacity and cost, Repeater system is more attractive for the system between Korea and China. KDDI-SCS Proprietary Use Pursuant to Company Instructions

  27. Please visit out web site! KDDI-SCS Home page : http//www.kddiscs.co.jp N.Takeda (Technical) : ntakeda@kddiscs.co.jp J.Matsuda (Commercial) : matsuda@kddiscs.co.jp Thank you! KDDI-SCS Proprietary Use Pursuant to Company Instructions

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