1章 基幹系光伝送システム - ieice-hbkb.org

1 5 3 1 5 ( )- 3 1 1-1 1-2 1-3 1-4 2017 1/(10) 5 3 1 5 3 1 1-1 2017 2/(10) 5 3 1 5 3 1 1-2 [2010 6 ] 30 1 1 25 106 1)

2 S/N Signal to Noise ratio 1 1 1-2-1 ETDM ETDM Electrical Time Division Multiplexing 1981 32Mb/s 100Mb/s 400Mb/s S/N 2017 3/(10) 5 3 1 400Mb/s 4 DSF Dispersion Shifted fiber DFB-LD Distributed Feedback Laser Diode APD Avalanche Photo Detector IM-DD Intensity Modulation-Direct Detection m 1-2-2 DWDM EDFA Erbium Doped Fiber Amplifier

3 1996 SDH 10Gb/s Booster/Pre-Amp S/N AW G Arrayed Waveguide Grating Tunable-LD FEC Forward Error Correction DWDM Dense Wavelength Division Multiplexing 2003 EDFA 10Gb/s 80 1-2-3 SDH SDH Synchronous Digital Hierarchy 1988 SDH 2)

4 SDH STM VC 2017 4/(10) 5 3 1 1-2-4 ADM ROADM DWDM 1999 SDH 10Gb/s ADM Add/Drop Multiplexer 2004 1 2 ROADM Reconfigurable Optical Add/Drop Multiplexer 2007 10Gb/s ROADM

5 Gb/s km NGN Next Generation Network 1 2 ROADM 1-2-5 OTN OTN Optical Transport Network ITU-T 2000 3) OTN 1 1 IP OTN SDH FEC Forward Error Correction ROADM 2017 5/(10) 5 3 1 1-2-6 40Gb/s 40 DWDM 2007 40Gb/s PMD Polarization Mode Dispersion IM-DD DPSK Differential Phase Shift Keying DQPSK Differential Quadrature Phase Shift Keying 40 Gb/s DWDM DQPSK PMD 1) K.

6 Hagimoto: Photonic Challenges and Present Status of Networks in Japan , OFC/NFOEC2008, OWS6 (2008) 2) ITU-T G. 707, G. 708, G. 709 (1988) 3) ITU-T G. 709 (2000) 2017 6/(10) 5 3 1 5 3 6 1-3 [2010 6 ] SDH Synchronous Digital Hierarchy OTN Optical Transport Network GMPLS Generalized Multi-Protocol Label Switching 1-3-1 SDH Synchronous Digital Hierarchy SDH ITU-T International Telecommunication Union Telecommunication Standardization Sector 1)

7 1988 SDH SDH PDH Plesiochronous Digital Hierarchy SDH SDH STM-1 STM-1 N STM-N N N 4, 16, 64, 256 STM-N 1 3 1 3 STM-N SDH 1980 21 SDH Ethernet IP Internet Protocol SDH GFP Generic Framing Procedure, ITU-T Ethernet VCAT Virtual Concatenation, ITU-T 2017 7/(10) 5 3 1 2017 8/(10)

8 LCAS Link Capacity Adjustment Scheme, ITU-T VCAT SDH SONET Synchronous Optical NETwork SDH SONET SDH SONET 1-3-2 OTN Optical Transport Network OTN WDM Wavelength Division Multiplexing 2001 ITU-T International Telecommunication Union Telecommunication Standardization Sector 1) OTN OTS/OMS/OCh OCh OTU/ODU/OPU 1 4 WDM OTN FEC Forward Error Correction 1 4 OTN U-T 2001 2 SDH IT 2009 12 IEEE 40G/100G Ethernet Fiber Channel 1 5 OTN WDM 5 3 1 1 5 OTN 1-3-3 ASON/GMPLS

9 SONET/SDH OTN ASON Automatic Switched Optical Network GMPLS Generalized Multi-Protocol Label Switching ASON ITU-T 3) GMPLS IETF Internet Engineering Task Force RFC3) Request for Comments ASON GMPLS ITU-T IETF ASON/GMPLS ASON/GMPLS SONET/SDH OTN ASON/GMPLS 5) BoD Bandwidth on Demand 6, 7) ASON/GMPLS 1)

10 Network node interface for the synchronous digital hierarchy (SDH) , ITU-T Recommendation ( ) (Jan. 2007) 2) Interfaces for the Optical Transport Network (OTN) , ITU-T Recommendation ( ) (Dec. 2009) 3) Architecture for the automatically