Rural Broadband- Deploying Stimulus funding in rural areas
with FTTH
David Stallworth
OFS
OSP Design Manager
770-798-2423
Rural FTTH Design
David Stallworth 770-798-2423
Rural Area Definition:
An area of between 1 and 32 homes per mile
SparseSparse
ClusterCluster
SporadicSporadic
The main issue: Where should the optical splitter be placed? CO, Cabinet, or Distributed?
Where to place the Splitter- 3 options
Home Run
Distributed
Splitters In Closures
Centralized
Splitters In Cabinets
Splitters In CO/Node/Headend
2.0
• Our Models say:
Home Run is not economical- Large cables for long distances and extensive splicing
Splitter Cabinet is not economical- Large cables for long distances, cabinets, splicing
Distributed Splitting is most economical for rural areas
Recommendations forRecommendations for for Rural FTTH for Rural FTTH
1. Use different design strategies based on density of area 2. Distribute splitters using 1x32 in each 1 mile PON area and 1x4 (1x8) feeding 1x8 (1x4) in rural areas 3. Increase fiber size for future proofing (at least one extra buffer tube for each rural road area) 4. Deploy Zero Water Peak fiber in cable for additional future proofing 5. Utilize Conventional Distribution Cable Design with drop closures on cable directly 6. Fusion Splice the drop to the distribution cable- no connectors to increase reliability, minimize loss, and reduce cost (initial and long term) 7. Splice splitters in initially to reduce installation time- installers only have to visit drop closure and not cabinet or splitter location
841
2
3
4
85
6
7
8
4
3
2
1
8
85
6
7
8
4
3
2
1
885
6
7
8
4
3
2
1
8 85
6
7
8
4
3
2
1
8
Up to 352 Houses served from 12 fibers
CO
Node
18 kft. radius Serving Area
Existing Telephone Network with Remote Terminals
CO
Node
18 kft. radius Serving Area
Existing Telephone Network with Remote Terminals
1010 nodes reduced nodes reduced To To 44 PON Nodes PON Nodes
Actual Rural Designs and Actual Rural Designs and TechniquesTechniques
TO HEADEND
GENTRY FARMS
48 COUNT EXISTING FIBEF1, 1-48
700'12 CO
UNT
MINI LT
1800'12 COUN
T
MINI LT
1300'12 CO
UNT
MINI LT
FUTU
RE
SPL I
CE
P OO
NT-
EXIS
TIN
G F
IBE R
LO
OP
1225
11361146
11621170
1141
126312971363
13731397
153815501604
1511
1890
19451981
19921964195020822025
2138
2056
2318
23042332
2344
2354
2370
2380
2400
2420
24382452
248225
08251825
42
2630
2662
2678
2700
2702
HAYNES AUTO PARTS
2257
1225
1297
1373
1397
GENTRY
FARMS
1511
2082
1945
23042500
2662
23542438
8
8
8
8 8
8
8
8
324
4
8
8
8
8
32
2700'24 fiber cable
4
8
8
4
4200'12 fiber cable
12 fiber cable
1800'12 fiber cable
18200'12 fiber cable
3900'12 fiber cable
7200'12 fiber cable
12 fiber cable
12 fiber cable12 fiber cable
12 fiber cable
6500'12 fiber cable
12 fiber cable
10300'12 fiber cable
12 fiber cable
18200'12 fiber cable
1800'12 fiber cable
4
8
8
8
8
88
4
THANK YOUTHANK YOU
David StallworthDavid Stallworth
dstallworthdstallworth@@ofsopticsofsoptics..comcom
770770‐‐798798‐‐24232423
