1. Procurement and lighting of dark fibre
Lada Altmannova
Stanislav Sima
Prague May 25th, 2004

2. Main changes in REN design
Traditional building elements (procured): data transmission services, routers, terminals, etc.
Traditional network function: provide best effort IP connectivity
New building elements: dark fibres, optical transmission equipment, switches
New network function: provide E2E circuits
Multi-vendor networking for feasibility (in multiple domain) and cost effectiveness (in single domain) – standards, MSA, etc. are needed. This is similar as on circuit and computer system design level.
Prague May 25th, 2004
Procurement and lighting of dark fibre

3. Dark fibre deployment in RENs
Increasing and world-wide deployment of dark fibre (acquisition of dark fibres instead of SDH or lambda services) – without moving back
Lease of fibres: 0.4 – 0.5 Euro/m/pair/year, including maintenance
Discounts on long term lease, disadvantages of IRU (prepayment, taxes and bankruptcy)
Increasing number of customer premises connected by fibre: to achieve this is more difficult problem than intercity fibre procurement
Building first mile fibre lines: about 30 Euro/m for 12 strand cable, 6 month in ground
Prague May 25th, 2004
Procurement and lighting of dark fibre

4. Procurement and lighting of dark fibre
Prague May 25th, 2004
Procurement and lighting of dark fibre

5. CEF network architecture will be new
Prefer network architecture with NIL (single span) lines and without overlaying (concurrent) fibres
KIS rule for fibres: Keep It Short, including connections crossing state borders
Realization of lambdas by own equipment and fibres for long distance data transmission
Search actively for new fibre providers (railways, highways, power distribution companies, fuel distribution companies, gas distribution companies, cable TV companies, etc.)
Search actively for regional authorities and local boards cooperation on laying first mile fibre cables
Prague May 25th, 2004
Procurement and lighting of dark fibre

6. How to go from telco services to dark fibres
Procure dark fibre before lambdas procurement
Procure your first dark fibre line ASAP to acquire experience (to avoid staff fear of: maintenance, service, lighting fibre, management of in-line equipment, costs, manpower, etc.)
Do not relay on one provider only, maintain concurrency (for price and for first mile acquiring)
If price is not excellent, use annual contracts and re-procurement
If dark fibre line is not offered but exists, use annual contract for lambda(s) and re-procure dark fibre
Prefer remote management of in-line equipment with local assistance of service company (no „managed dark fibre service“ from ISP)
Prague May 25th, 2004
Procurement and lighting of dark fibre

7. Procurement and lighting of dark fibre
Prague May 25th, 2004
Procurement and lighting of dark fibre

8. Procurement and lighting of dark fibre
Prague May 25th, 2004
Procurement and lighting of dark fibre

9. We need non-expensive fibre footprint
KIS: Connect dark fibres used by NREN by a short cross-border fibre lines (called also Near over Border - NoB)
Use WDM equipment on national and cross-border fibres for implementation of lambdas between GN2 PoPs/end users
This KIS approach avoids double payment of fibres or lambdas (parallel lines are paid by NREN and DANTE), in the biggest item of budgets
Such change of networking strategy is difficult, feasibility study and testbeds are needed
Prague May 25th, 2004
Procurement and lighting of dark fibre

10. Lighting of dark fibre: NIL approach
Production lines G.652, 1550 nm, EDFA
189 km Praha – Pardubice GE since May 2002
235 km Brno – Ostrava GE since June 2003
Experimental lines G.652, 1550 nm, EDFA
235 km Brno – Ostrava OC-48 June 2003
286 km Praha – Brno GE May 2004 (+Raman)
More wavelengths possible
Prague May 25th, 2004
Procurement and lighting of dark fibre

11. Dark fibre lighting register: see before new line design
Prague May 25th, 2004
Procurement and lighting of dark fibre

12. NIL tests in laboratory
G.652 fibre spools, EDFA + Raman:
325 km GE
250 km OC-48
252 km 2x 10 GE
290 km 10 G DWDM
G.655 fibre spools (recently delivered):
testing
lower cost of dispersion compensation on 10 Gbps
Prague May 25th, 2004
Procurement and lighting of dark fibre

13. Let us introduce: PC Light
Design Kit for wide area fibre networks, based on racked PCs with build-in optical amplifier modules
Multi-vendor (multi-source) building elements
Preliminary comparison of OA (EDFA) costs:
OA from „ISP vendor“: USD
OA from „optical vendor“: USD
OA from „module vendor“: USD (two OA in module)
OA from Integrated Circuit vendor: ??? (forthcoming)
OA costs are the biggest item in long distance transmission systems costs (e.g. 60%)
=> PC Light helps to radically change WAN/MAN costs
Prague May 25th, 2004
Procurement and lighting of dark fibre

14. EDFA 2in1: PC Light equipment example
PC with build-in OA EDFA booster and preamp
Successfully used for NIL GE connection from Plzen to CzechLight in Prague by dark fibre pair (159.4 km, 36.7 dB) since May 2004
One Side Amplification (OSA NIL approach): this equipment is placed in Prague only. No OA equipment is placed in Plzen, so we expect lower service costs and higher availability (we have 24/7 staff in Prague only)
Advantages: low cost, low size (1U), low power consumption, Linux, SNMP, reach up to 225 km, possibility of development, ….
Prague May 25th, 2004
Procurement and lighting of dark fibre

15. EDFA 2in1: EDFA Module in Standard 1U PC with Linux
Alarm LEDs
BO IN
IDE
+5V DC
RS 232
PA OUT
BO OUT FE
RS232C
USB
* Network boot is also possible
PA IN
MicroATX MainBoard with fanless CPU
Power Supply
Flash disc*
Low NF preamplifier
Booster
Prague May 25th, 2004
Procurement and lighting of dark fibre

16. Procurement and lighting of dark fibre
PC Light forthcoming
EDFA 2in1 works on 10 GE (tested in laboratory)
GE interface card on 1550 nm
GE interface card for bidirectional transmission on single fibre
etc.
Prague May 25th, 2004
Procurement and lighting of dark fibre

17. Prepared CzechLight connections
Prague May 25th, 2004
Procurement and lighting of dark fibre

18. Prepared CzechLight PoP in Brno
Fibre Praha - Brno km, including km of G.655 fibre.
DWDM 10 Gbps cards for Cisco 15454
NIL transmission, if possible
June – July 2004
Prague May 25th, 2004
Procurement and lighting of dark fibre

19. Procurement and lighting of dark fibre
Acknowledgement
Jan Gruntorad for support and GLIF entry
Miroslav Karasek and Jan Radil for lighting of CESNET2 and CzechLight fibres
Josef Vojtech for EDFA 2in1 development
Comment: presented ideas and opinions are result of our ongoing R&D activities and are opened to improvement
Prague May 25th, 2004
Procurement and lighting of dark fibre