ESSENTIAL OPTICAL TRANSMISSION COURSE DESCRIPTION
Transmission is the process of sending information along a medium of, copper,
fibre or wireless. This course looks at transmission techniques for fibre
networks. The course aims to demystify the technologies involved by explaining
all the buzzwords used in optical transmission.
WHAT WILL YOU LEARN
* Describe various optical transmission technologies.
* Explain how SDH and OTN work.
* Explain how WDM, CWDM and DWDM work.
* Explain PON, GPON and GEPON.
ESSENTIAL OPTICAL TRANSMISSION COURSE DETAILS
* Who will benefit:
Anyone working in telecommunications.
* Prerequisites:
None.
* Duration
2 days
ESSENTIAL OPTICAL TRANSMISSION COURSE CONTENTS
* Transmission basics
nsmission basics Systems, media, signals. Signal degradation, noise,
distortion, attenuation. Digital, analogue. Modulation, encoding.
* Fibre transmission
Fibre vs copper, optical transmission, fibre characteristics, fibre component
parts. Multi Mode Fibre (MMF). Single Mode Fibre (SMF). Fibre connections.
Lasers. Attenuations, dispersion, optical signal noise ratios (OSNR) and
their effects. Channel Spacing and Signal Direction. Limiting factors to
single wavelength.
* SDH
Timing and synchronisation of digital signals, the plesiochronous digital
hierarchy (PDH), the synchronous digital hierarchy (SDH), service protection
with SDH. TDM. Standards, basic units, frames, STM1 frame, bit rates, STM0,
STM1, STM4, STM16, STM64, STM256, SDH architecture, rings, Add drop
multiplexors. SDH network topologies, structure of SDH equipment, SDH
synchronisation, protection switching in SDH networks, SDH alarm structure,
testing of SDH, equipment and systems, Ethernet over SDH.
* OTN
G.709, OTN interface structure, Optical transport modules, ONNI, OCh, OUT,
ODU, OPU. G.709 amendments.
* WDM overview
Multiplexing, TDM, WDM benefits. WDM standards. CWDM vs. DWDM. Four Wave
Mixing (FWM). Impact and countermeasures to FWM on WDM.
* DWDM
ITU G.694.1, channel and spacing. Optical Terminal Multiplexers (OTM).
Optical Add/Drop Multiplexers (OADM). Adding versus dropping. Optical
Amplifiers. Erbium Doped Fibre Amplifiers (EDFA). Transponders and Combiners.
Optical and Electrical Cross Connects (OXCs/DXCs). Cross Connect types
(Transparent/Opaque). Advantages and disadvantages of various Optical cross
connects.
* FTTx
Fibre installation and air blown fibre, FTTH, FTTC, FTTN, FTTD, FFTH
topologies and wavelengths, active or passive optical network.
* PON variants
Gigabit passive optical network (GPON), Gigabit Ethernet passive optical
network (GEPON), Time division PON (TDM-PON), XG-PON, Wave Division
Multiplexing PON (WDM-PON), 1Gbps, 10Gbps, 40Ggps, 100Gbps FSAN (Full Service
Access Network) NGA (Next Generation Access), Strategies for TDM-PON to
WDM-PON migration, Architecture of NG-PON (hybrid WDM/TDM PON), Additional
services than triple play.