M2_Basic Concepts.ppt
- 1. Engr. Abbas Abbasi Fiber Optic Communications An Introduction
- 2. Multiplexing To utilize the system capacity fully, it is necessary to transmit many channels simultaneously through multiplexing There are two different types of multiplexing: Time Division Multiplexing (TDM) Frequency Division Multiplexing (FDM) or Wavelength Division Multiplexing (WDM) Code Division Multiplexing
- 3. Time Division Multiplexing (TDM)
- 4. Time Division Multiplexing (TDM)… Bit slot divided into 5 minor bit slots 5 Channels multiplexed Single channel bit rate – 64 Kb/s 5 channel composite bit rate – 320 Kb/s
- 5. Frequency Division Multiplexing (FDM)
- 6. Frequency Division Multiplexing (FDM)… Broadcasting of radio Television channels
- 7. Wavelength Division Multiplexing (WDM)
- 10. TDM Digital Hierarchies… 64 kbps 2.048 Mbps 1.544 Mbps 1.544 Mbps 6.312 Mbps 6.312 Mbps 8.448 Mbps 34.368 Mbps 139.264 Mbps 44.736 Mbps 32.064 Mbps 97.728 Mbps 274.176 Mbps CEPT N.A. Japan 4 3 2 1 0 level * 30 * 24 * 24 * 4 * 4 * 4 * 4 * 7 * 6 * 4 * 5 * 3 E1 E2 E3 E4 T1 T2 T3 T4 J1 J2 J3 J4
- 11. SONET/SDH Synchronous Optical Network (SONET) Synchronous Digital Hierarchy (SDH) Optical Carrier Synchronous Transport Module Bit rate for STM-7 ? Bit Rate for OC-180 ?
- 12. Modulation Formats Return to Zero (RZ) Nonreturn to Zero (NRZ)
- 13. Modulation Techniques Amplitude Shift Keying (ASK) Frequency Shift Keying (FSK) Phase Shift Keying (PSK)
- 14. Amplitude Shift Keying (ASK)
- 15. Frequency Shift Keying (FSK)
- 16. Phase Shift Keying (PSK)
- 19. Fiber Toolkits
- 20. End of second module Thank you