New Methods of Fiber Deployment for MDU/MTU and Other Buildings
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1 New Methods of Fiber Deployment for MDU/MTU and Other Buildings Mark Boxer Applications Engineering Manager OFS Cell:
2 Agenda Fiber Building Blocks Detailed Bend Insensitive Fibers introduction Headend Solutions Backbone Solutions for smaller MDUs Indoor Deployment Methods Outdoor Deployment Methods Backbone Solutions for larger MDUs Solutions in the living unit 2
3 New challenges in the network More and tighter bends Outdoors Limited duct space Smaller cable diameters Smaller closures and cabinets Indoors Fiber management challenges in CO New indoor applications in homes and buildings 3
4 Macrobending Conventional Single-mode fiber High optical loss around bends Large Optical Loss Bend Optimized Singlemode fiber Optical Signal Dysfunctional Signal exits bend Small radius Small radius Service Maintained Service Disrupted 4
5 Microbending Point Stress Lateral Stress Reflected 5
6 Bend loss vs wavelength and radius Macrobending Loss (db) Optical Fiber Bending Loss Increase vs Wavelength Macro-bending Loss of typical standard G.652D SMF Single 360 degree turn (maximum loss) 10 mm radius std SMF 7.5 mm radius std SMF 5 mm radius std SMF Wavelength (nm) Bending loss of Std SMF (G.652D) can disrupt services or reduce reach 6
7 Bend loss challenge increasing in the future Next-gen systems increase bend loss 2X-4X current systems Standard Current Generation PON IEEE GE-PON downstream (1000BASE-PX-D) ITU-T G-PON Downstream 1490 nm Next Generation PON on Same ODN 10G E-PON downstream 1577 nm 10G-PON downstream WDM PON 1625 nm Bending Loss Increase 3X 4X SCTE /ITU RF-Video downstream 1550 nm RFoG upstream 1610 nm 2X 7
8 ITU-T G.657 Bend Loss Insensitive SM Fiber ITU-T G.657 Minimum design radius 10 mm Bend Challenged OSP Cable 7.5 mm Most Connectivity Applications G.652D Compliant Long reach and most short reach needs G.657A1 G.657A2 G.652D Compatible Short reach (<1 KM) with sharp bending (MDUs, In residence) NOT A STANDARD G.657B2 (Obsolete) 5.0 mm In Home/MDU Drop NOT A STANDARD G.657B3 8
9 G.657A1 and G.657A2 fibers Core network applications G.657 A1 fibers OSP Cables with splices and tight bends Drop cables and microcables Your Optical Fiber Solutions Partner G.657 A2 fibers FDHs Central Office Jumpers OFS Proprietary 9
10 FTTx Drop Applications in the home The drop is the most challenging portion of the network Often requires bending, stapling Rugged cables and ultra bend-insensitive fiber needed Storage 10
11 Ultra Bend Insensitive fiber cable (G. 657B.3 standard) Designed for the drop, not the backbone Verizon TPR 9424 MDU simulation used to evaluate product performance Staples Bends Weight 11
12 G.657.B3 Cables Effect of stapling and routing around sharp corners 90-degree bend, stapled ¾ from corner: 5 lb tension, 5.5mm fiber bend radius Aggressive stapling: 19mm bend radius for fiber (minimal bending) Corners are more challenging than staples!
13 What makes Bend Insensitive Fiber special? Standard Single-mode fiber Allows light to leak out during bending Bend insensitive fiber More complex profile captures light Representative index of refraction profiles (not exact) 13
14 Compatible with the existing network Typical splice loss Fiber type G.652D G.657A1 G.657A2 G.657B3 G.657A db 0.02 db 0.02 db 0.05 db G.657A db 0.02 db 0.02 db 0.05 db G.657B db 0.05 db 0.05 db 0.02 db 14 14
15 Splicing bend insensitive fibers OTDR Limitations OTDRs measure backscattered light, which causes limitations with their effectiveness OTDR incorrectly perceives power gain ( gainer or positive event ) AllWave (G.652D) More light backreflected at the interface AllWave FLEX (G.652D and G.657A1) 15
16 Splicing bend insensitive fibers OTDR incorrectly perceives elevated splice loss Less light back-reflected at the interface, light travels through into larger MFD AllWave FLEX (G.652D and G.657A1) AllWave (G.652D) 16
17 Splicing bend insensitive fibers Direction 1 Actual loss = (Loss + gain)/2 = Bi directional avg Direction 2 Gainer Actual loss Elevated loss Incoming pulse Outgoing pulse No change in signal shape or system performance due to slightly different MFDs AllWave (G.652D) AllWave FLEX (G.652D and G.657A1) 17
18 Bend insensitive math For drops, bend loss is more important than splice loss In-Residence Drop Cable Loss vs. Fiber type Attenuation Loss Component, 1550 nm (db) G.652D G.657A2 EZ-Bend fiber Inherent fiber loss (100m) Attenuation due to bending in the Verizon MDU Drop Cable Simulation (TPR-9424) Dark (>30 db) 2 to 5 (midpoint, 3.5) <0.2 Splice loss (1 splice to G.652 fiber) SC-APC to SC-APC Connector Loss (0.15/ connection, 2/link) Attenuation total or typical link status Over 30 (Link will not work) 3.87 (Likely to create link failure) 0.62 (Well within acceptable limits) 18
19 Think you don t need bend insensitive technology? Think Again! Fiber as installed in a randomly selected residence Mass deployment need ultra bend insensitive fiber in the home
20 Bend Insensitive Fiber Summary Which fibers do you need and where? Central Office and Data Center Feeder Cables Cabinets Distribution Cables OSP Drop Cables MDU Back bone MDU or inhome drop G.657A2 G.657A1 G.657A2 G.657A1 G.657A2 G.657B3 or or G.652 G
21 MDU Headend/Closet Options 21
22 MDU Headend Options Low fiber count options Many MDUs lend themselves to splitter placement on-site Tight spaces often dictate use of wall-mounted materials Rack mounted sometimes an option Double capacity with LC connectors Very cost effective hardware available on the market
23 MDU Headend Options Higher fiber count options Larger MDUs require more capacity Patch, splice, and combination wall and rack mounted options available Single fiber and ribbon options available
24 MPO Module Based Splitters Ribbon solutions are excellent for space challenged areas Elegant fiber management 8 fiber MPO fanouts to LC or SC connectors Minimizes mess, less chance of jumper damage Easy installation procedure Cost competitive with single-fiber solutions Your Optical Fiber Solutions Partner OFS Proprietary
25 Solutions to the Unit Indoor Cabling Methods for Smaller MDUs Your Optical Fiber Solutions Partner OFS Proprietary 25
26 Fiber breakout method 26
27 Fiber breakout method Uses Breakout style of fiber optic cable Add Mechanical Splice-on Connector Open two windows in sheath Connect to in-unit fiber cabling Cut and pull back fiber Plug into in-unit network Your Optical Fiber Solutions Partner Add connector The finished product OFS Proprietary 27
28 Classic Cables and Enclosures Indoor ONT Drop cables Enclosures to connect riser cables to drop cables Unit Enclosures 2 meter jumper to ONT Riser cables Your Optical Fiber Solutions Partner OFS Proprietary 28
29 Solutions to the Unit Outdoor Cabling Method 29
30 Outside MDU Cabling System Sometimes, a fiber path is not available indoors Limited or no riser space Building requires no tenant interruption Advantages of outdoor installation Faster, easier installation No bend limiters, conduits, or raceways needed Installation possible in horizontal or vertical configuration
31 Outside MDU Cabling System Drop Bundle Outdoor/indoor bundled cable assembly can pass 24 units in 2 days vs.. 6 days for indoor solution Ultra-bend insensitive fiber 10'-4" 10'-4" 10'-4" 10'-4" 10'-4" FEED DOWN To Anchor Strength Member Feed Down Down to Fiber Distribution Terminal or FDT Example shown to left Tail Feed Up Up to FDT on Roof 10'-4" 10'-4" 10'-4" 10'-4" 10'-4" FEED UP To Anchor FDT 50', 100', 200' FDT To Anchor To Anchor Tail
32 Bundled Outside-in MDU Cabling System Making the customer connection Easy as 1,2,3 1. Uncoil protected connector 2. Remove Connector protection 3. Insert connector into living unit and route to Telecom Outlet near ONT
33 Backbone solutions for larger MDUs Larger MDUs may require specialized equipment Ribbon cables are very effective for riser backbones Minimizes cable count Minimizes riser space Pre-connectorized solutions can decrease installation times Combiner with ribbon tail. Supplies up to 72 customers Terminal with tail. One per floor. The tail with MPO connector plugs into the combiner. One per floor. Feeds 12 customers. 2 meter jumper to ONT Indoor ONT 33
34 Spooled Plug and Play MDU Backbone vs Classic 10 Floor Building Example Classic System 550 ft of cable pulls 244 field terminations or splices 2 inch riser diameter ~8-12 person days labor Spooled Plug and Play 230 ft of cable pulls 4 field terminations or splices 1 inch riser diameter ~2 3 person days labor FDH FDH
35 MDU Solution Pros/Cons to the unit Inside Fiber Outside MDU Inside Spooled Inside - breakout Cabling System plug and play Classic Building Smaller Smaller (12 floors Larger All type and below) Speed Faster Fastest Faster Slower Cost Most Lowest total cost Higher materials, Lower attractive solution lower labor materials, indoor Higher labor solution Space More in riser None in riser Least in riser Most in riser Other Limited Concern about Most attractive for Space concern about aesthetics larger buildings dependent aesthetics in hallways 35
36 In-unit solutions 36
37 In-unit deployments MDU homeowners are sensitive to cable deployments within homes The customer dictates terms inside unmanaged bends Relatively common for customers to refuse service due to aesthetics Anecdotal number is 5%-10% You want to put that in my crib?? No way! 37
38 In-unit pathways are challenging Your Optical Fiber Solutions Partner OFS Proprietary 38
39 New construction before walls installed No aesthetics concerns Microduct with cordage Good acceptance Medium installed cost Reliable service Target Application: New Construction before walls installed G.657B3 fiber, 3.0 or 4.8 mm cord stapled in place Good acceptance Low installed cost Reliable service Storage 39
40 Existing construction aesthetic concerns Stapling G.657 cables Some customer aesthetic/décor concerns Low installed cost Reliable service Mini Tape Some customer aesthetic/decor concerns Medium installed cost, a little more complex installation Reliable service when installed correctly Target Application: Existing residence 40
41 Existing construction Microcord Excellent acceptance Low to Medium installed cost Fast installation EZ-Bend ILU Solution See it? Your Optical Fiber Solutions Partner OFS Proprietary 41
42 Microcord Solution Components 900 micron buffer fiber Auto-Slack Spool Factory Mounted SC-A both ends Adhesive Gun 300 or more living units. Adhesive tube sold separately Adheres to wood, paint, caulks, drywall, plaster, masonry. Dries clear, may be painted and/or caulked over if desired. Adhesive cartridge and Nozzles Bend Limiter Corner Anchor Self Adhesive Self Adhesive Wall Mount Module Through hole kit Tool and hole cover pairs to cover interior wall holes Wall Mount Module with Factory Your Optical Fiber Solutions Partner OFS Proprietary
43 About OFS World-leading designer, manufacturer, and supplier of Optical Fiber Optical Fiber Cable Connectivity Optical Components Specialty Photonics Products We supply a wide variety of applications and industries Wholly owned by Furukawa of Japan
44 About OFS - Stability, Reliability, Worldwide Resources OFS and Furukawa Global Reach
45 Extensive Breadth of Applications
46 Summary There are a wide variety of new technologies to support MDU deployments Bend insensitive fibers are the main building blocks G.657B3 fiber is an integral component for the drop Solutions to the unit Indoor solutions Breakout-type solution Classic solutions with enclosures and cables Spool and Play solutions Outdoor Solutions Solutions in the unit Microduct with cordage G.657B3 fiber, 3.0 or 4.8 mm cord stapled in place Mini tape Microcord solutions
47 Please visit the OFS booth for more information Mark Boxer Applications Engineering Manager OFS Cell:
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