Stáhnout soubor - KATRO SERVIS spol. s ro

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Představení firmy
Bktel communications
Německo
BKtel communications GmbH
page 1
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Company introduction
> Founded in December 1997 as private owned company
> BKtel develops and produces products for optical broadband communication networks
> BKtel is a solution provider, not just a box mover and manufacturer
> BKtel employees invented the 1550nm based technology for optical Transmission
BKtel communications GmbH – All rights reserved
TS/Jan-2010
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BKtel offices world wide
BKtel Japan
BKtel
HQ Germany
BKtel China
Aachen
Madrid
Atlanta
Tokyo
BKtel
USA
BKtel
Spain
Beijing
Abu Dhabi
BKtel
Middle
East
Jakarta
BKtel
South-East Asia
As well as Agents and Distributions partners world wide
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Some references
TELECOM
ITALIA
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RF-Overlay on Fiber based
Networks (P2P, GPON, HFC)
Jak se přenáší RF frekvence ve vláknových sítích
BKtel communications
page 5
Capability RF-Overlay on fiber
q RF Video Overlay transmits transparent
§
§
§
§
Based on Video Signals commonly used in CATV networks since
decades:
Analog: PAL, NTSC (connect direct to TV set)
Digital: 64 QAM, 256QAM, DVB-T (cable modem services or DVB-C)
Frequency range: 47 MHz -862 MHz
q Satellite IF:
§
§
§
New
Satellite-IF: QPSK (Connect digital Set top box –DVB-S)
Frequency Range: 950 MHz – 2150 MHz
Multi Sat-Band (KU-Band up to 4 Satellite layers – 5,5GHz)
à BKtel provides RF Overlay Technology for any Data
network with CATV + optional SAT-IF (different options)
n
Portfolio: Providing most flexible products
n Performance: Providing best-of-class products
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Video evolution short term - versus data rates
q Given data rates are based on per channel/ program
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Video evolution long term - versus data rates
q Given data rates are based on per channel/ program
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Networks RF-Overlay + P2P
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Point to Point vs. Point to Multipoint
Principle Architecture
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Point to Point vs. Point to Multipoint
Principle Architecture
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Networks RF-Overlay + GPON
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Video Overlay for PON Networks
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PON - Typical installation – urban/rural -
RF signals
CATV
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RFoG+GPON
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Why RFoG
q RFoG (Radio Frequeny over Glass) is a method to provide
DOCSIS 3.0 Services over a point-to-Multipoint Network such as
GPON /EPON etc.
q The RFoG Wavelength in the Return Channel is specified with
1610nm to run in parallel with GPON on the same splitter
q The RFoG Return Channel Transmitter is sending in Burst Mode,
which means only one Transmitter at a certain splitter can send,
the other ones are switched off (cable modem triggers the
Transmitter within 1µsec)
q RFoG is designed mainly for Cable Operators running today
already DOCSIS, but want to invest in a future proof Network
concept based on fiber optics (extension to GPON or any other
PON based data network)
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RFoG: RF over Glass
RFoG Introduction – Motivation
q Fiber Networks are Future Proofed
q
q
q
… due to expected increase of subscriber bandwidth
Telco operators move towards VDSL
(with optical feeder networks like FTTC)
HFC operators move towards fiber-deep-architectures
q HFC Customers Requirement
q
q
Technology compatible to future (G)PON networks
Technology compatible to existing DOCSIS(3.0)
q HFC Vendor’s Challenge
q
q
q
High (G)PON optical budget of 28dB (maybe 31.5dB)
Opt. combination of various optical return transmitters
Very low cost fibernode
q Solution: RFoG (RF over Glass)
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RFoG: RF over Glass
RFoG Strategy of BKtel
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Migration Scenario or simultaneus use
DOCSIS & GPON in parallel:
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Overview
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Hybrid – GPON + DOCSIS
Next to each other
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RF Overlay as initial step for
FTTx upgrade
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FTTH Step in Scenario over TV
Overview
q Market initator for FTTx
q
q
q
TV as common request or as upgrade of SAT–IF or HD-TV
Separation of services (TV, Tel, IP, etc from different SP)
Govermental initials (EU regulations for open access)
q Market demands of different services (FTTx)
q
q
q
q
TV services 100%
IP services 30%
Tel services 30%
Others 10%
TV service is driver for FTTx installtions.
Roll outs starts with TV and need easy upgrade to IP
services.
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Dimensions:
ca. 140 x 55 x 30mm
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BKtel Products for FTTH
Video overlay
page 24
Bktel‘s V-OLT Components
Overview
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BKtel - Components
Externally Modulated Transmitter ES10 XL/ES26 (1)
Signal input
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BKtel - Components
Directly Modulated Transmitter DS26 (1)
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BKtel - Components
Optical Amplifier OVx (1)
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BKtel - Components
ErYb extreme high power Optical Amplifier OV (1)
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BKtel - Components
ErYb extreme high power Optical Amplifier OV (2)
Available Versions with integrated
IP Filter for GPON:
q 8 x 20dBm in 1U / including 8xWDM
q 16 x 19 dBm in
q 32 x15,5 dBm (any HLR type) in 2U
WDM
Isolator
Coupler
Isolator
WDM
Coupler
Splitter
Er doped fiber
Control
Circuit
Several laser
Pumps
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WDM
Pump laser
980 / 1480 nm
Seite 30
BKtel - Components
Optical WDM filter
q Optical WDM coupler (FWM016-OLT):
16 x 1310&1490 / 1550 nm WDM coupler for connection of 16
PON-systems
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BKtel - Components
Optical splitter
q Optical Splitter FOV064-PLC
q Video Overlay in FTTx Networks
q Features
q 64 output ports in 2HU,
q SC/APC
q Insertion loss < 19.7 dB
q Uniformity < 1,5 dB
q
q
q
64 output ports in 1 HU,
LC/APC
Insertion loss < 19.7 dB,
Uniformity < 1 dB
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BKtel - Components
Optical CATV-Receiver with integrated WDM for GPON
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Network Management
page 34
Příklad :
FTTH instalace ve Slovinsku
page 35
Advanced fiber optic networks in Europe
Country wide FTTH installation in Slovenia
q Initial situation:
q Telekom Slovenije (Slovenia) has planed to upgrade network to a
point to point (P2P) FTTH network country wide. CPE is located in
living room.
q Existing backbone network was rebuilt and enlarged suitable for
P2P FTTH.
q P2P was used to get maximum in bandwidth and highest reliability
and security standard. (Most advanced network = most competitive
and investment proof).
q Multiple Play: CATV distribution, IPTV, Internet and Telephony.
q Press releases:
http://www.lightreading.com/document.asp?doc_id=130970
q http://www.lightreading.com/document.asp?doc_id=129721
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q Net topology:
q Starting from Master Head End in Ljubljana all CATV signals
are distributed country wide with additional local signal
insertion (Local programs).
q Distribution network: e.g. Long haul analogue signal
distribution from Ljubljana to Murska Sobota (ca. 260km).
q Average SNR at user >48dB (after 260km); else >53dB.
q Access Network: opt. signal amplification with EDYFA
16x20dBm and 64way opt. splitting.
q Intelligent fiber management (high splice density and space
saving).
q Inhouse distribution over tube/duct system to the living rooms.
q First step implementation is 50.000HP upgradable to
240.000HP.
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Typical PON + V-OLT Configuration
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Seite 39
Děkuji za pozornost
OTÁZKY?
TS/Jan-2010
Seite 40

Stáhnout soubor - KATRO SERVIS spol. s ro

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