The Next Wave Tomorrow’s Network Today · FTTH IEEE GE‐PON downstream 1490 nm 10G E‐PON...
Transcript of The Next Wave Tomorrow’s Network Today · FTTH IEEE GE‐PON downstream 1490 nm 10G E‐PON...
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Remember when…
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In the Beginning…• Long Haul Routes Established
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Metro Buildout
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Access Networks• FTTx
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Biarri
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The next wave• Macro to Small Cell/5G
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Your Optical Fiber Solutions Partner® at www.ofsoptics.comC‐RAN
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Big and Small
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• Big demand– Bandwidth and fiber
• Smaller bends• Smaller fiber• Smaller OSP Cable• Smaller ISP Cable
BENDS
SIZE
OSP
ISP
BANDWIDTH& FIBER
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Bandwidth growth is accelerating
• In the past 15 years, we’ve seen…– The Internet, iPods– HDTVs, DVRs– Smartphones, Tablet
computers– Streaming services
• All require every increasing amounts of bandwidth
• Where to get additional bandwidth– Faster equipment– Use more wavelengths– Install more fiber
• Change is constant
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Mary Meeker (Kleiner Perkins) Information forecast
1,024 Gigabytes = 1 Terabyte. 1,024 Terabytes = 1 Petabyte. 1,024 Petabytes = 1 Exabyte (In 2000, 3 exabytes of information was created.) 1,024 Exabytes= 1 Zettabyte.
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Bandwidth – then, now, and next
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~ 0.6 kbps
Then
2 Mbps
25 Mbps1.5 Mbps
9 Mbps6 Mbps
Now
Next
VR>500 MBPS
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4K (Ultra HD) TV
• Next gen TV format – 2x resolution, roughly 2X bandwidth
• Content online and growing rapidly
• For the first time ever, higher quality video is available via Internet streaming versus standard packages
• Price continues to drop rapidly
– UHDTV 70” ~$1,000 USD
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Source: Best Buy
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25 Mbps/screen – How many screens used at once?
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IoT/5GBandwidth – then, now, and next
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Artificial Intelligence
• Already in widespread use behind the scenes
• Image analysis, voice analysis
• Natural language
• Autonomous vehicles & robotics
• Enormous potential for early medical screenings using smartphones
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Optical spectrum needed for the future
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RFoGGE/GPON
201210GPON
2016NG‐PON2(40G‐PON)
Year1990s
TechnologyP2P & DWDM
2000s12 ch CWDM
E‐Band CWDM 2010
Full Spectrum?Std SMF G.652.D Bending LossWater Peak
LossWater Peak
Loss
10 mm radius
The first 30 years used 1310/1550 nm. The next 30 will require the entire ITU spectrum.
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Zero Water Peak PerformanceClean performance through the optical spectrum
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ZWP has up to 22% lower attenuation in the water peak region
wavelength (nm)
0
0.3
0.6
0.9
1.2
1300 1500 1600
Loss (d
B/km
)
O LCSE
1400
LWP fiber
Zero Water Peak fiber ‐ lowest loss
U
Conventional SM Fiber
G.652A/B
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Bend loss vs wavelength and radius
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Optical Fiber Bending Loss Increase vs WavelengthMacro‐bending Loss of typical standard G.652D SMF
Single 360 degree turn (maximum loss)
0
5
10
15
20
Wavelength (nm)
Macrobe
nding Loss (d
B)
10 mm radiusstd SMF
7.5 mm radiusstd SMF
5 mm radiusstd SMF
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Bending Loss will become an even Bigger ChallengeIncreasing 2 to 4 times from Current Systems
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Application Standard Current Generation Next Generation on Same Fiber Network
Bending Loss
Increase
FTTH
IEEE GE‐PON downstream
1490 nm
10G E‐PON downstream 1577
nm 3X
ITU‐T G‐PON Downstream
10G‐PON downstream
40G‐PON(NG‐PON2)
1603 nm 4X
DOCSIS and HFC
SCTE
/ITURF‐Videodownstream
1550 nm
RFoG upstream
1610 nm 2X
Metro and some Long
HaulITU
C‐Band DWDM /CWDM
1560 nm
L‐Band DWDM /CWDM
1625 nm 2.5X
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New challenges in the network More bends, tighter bends
• Outdoors– Limited duct space
• Demands smaller cable diameters– Demands smaller closures and hand holes
• Indoors– Fiber management challenges in CO– New indoor applications in homes and buildings
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Macro/Micro‐bending
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Smallradius
Bend Optimized Singlemode fiber
Smallradius
Service Maintained
Optical Signal
Large Optical Loss
Dysfunctional Signal exits bend
Service Disrupted
Conventional Single-mode fiberHigh optical loss around bends
Smallradius
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SM/BIF/UBIFDemo
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Small bends can mean big losses (G.652 Fiber)Two 10 mm radius half bends can lose up to 10 KM of reach
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20 km
OLT
2016 GPON 1490 nm 2 half bends 10 mm radius
20 KM reach preserved
2022 – NG PON 2 1603 nm2 half bends 10 mm radius
10 KM less reach
10 kmOLTOLT
15 km
OLT
2017 10G‐PON 1577 nm 2 half bends 10 mm radius
5 KM less reach
Sounds like an opportunity for bend insensitive fibers
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New OSP Fibers can Preserve PON reach
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20 km
OLT
2016 GPON 1490 nm downstream2 half bends 10 mm radius
20 KM reach preserved
2017 10G‐PON 1577 nm downstream2 half bends 10 mm radius
20 KM reach preserved
20 km
OLT
2022 – NG PON 2 1603 nm downstream2 half bends 10 mm radius
20 KM reach preserved
20 km
OLT
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Meeting the bending challenge in the OSPNew fibers can help
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Smaller cables reduce installed costs
Greater flexibility to use existing infrastructureLess bend sensitive fibers may enable smaller handholes for some designs
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200 micron fiber• Enables 2x fibers in same tube (or smaller tubes)
• Glass stays the same (125 microns) • > 12 fibers/tube, last 12 fibers ring marked• Fully compliant to fiber standards• Fully tested in standard cable designs• Reliability is not sacrificed• Millions of KMs deployed already
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245 microns
Glass fiber
Primary coating
Secondary coating
250 microns200 microns
Glass fiber
24 fibers fit in a typical 12F tube2X the cabled fiber density
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200 µm fiber splicing –Loose tube cables
• Seamless splicing with the installed base• Spliced with the same tools and
procedures as 250 µm coated fibers• Why?
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Splicers hold the glass fiber, not the coating!
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Rollable Ribbons (aka. Pliable Ribbon)• Enables 2x Ribbons in same
tube (or smaller tubes)• Intermittent bonds between
fibers in a ribbon• “Rollable” into a smaller
package than flat ribbons
• Development driven by NTT –Proposed in early 2000s
• “Classic” Japanese development – multiple companies work on similar problem
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Furukawa (2012) Illustration
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Ultra high fiber count/density applications• “Classic” application
• Connects data centers together
• 1728 fibers and more• Little to no mid‐span fiber
access• 3456 already being
installed
• Emerging application• FTTH distribution• Main cable connected to
micro (or other) cables• Frequent access for butt
splicing and mid‐span access
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Where Rollable Ribbons make sense
• Ultra high fiber counts – Significant diameter reductions– Enables 1728 fibers in 1 ¼” duct– 3456 fibers and higher are practical
• Lower fiber counts– 200 µm ribbons have more familiar performance and handling– Cables with 200 µm ribbons have similar diameters to rollable ribbons– When will 200um rollable ribbons be available?
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Data Center Interconnect fiber density can be doubled at lower cost with Rollable Ribbon Cable
Conventional ‐ OSP Spliced to ISP Cable Dual Rated RR cable can avoid 1000s of splices
• Double fiber density vs. conventional flat ribbon cables, $10Ks savings by avoiding new duct
• Indoor/Outdoor can bypass splice points saving $10Ks• Lighter weight and small size maximizes fiber count in congested
raceway and trays
Dual Rated Cable can lower cost by avoiding an outdoor to indoor splice
Where Rollable Ribbons make sense
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Evolution of optical cable – microcables
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Microcables and Microducts Benefits Materials
High fiber density ‐ 200% better space efficiency
Labor Blown cable enables faster deployment than pulled cable Longer blowing distances, fewer splice points Smaller, easier to handle, equipment needed for install
Financial/Intangible Flexibility to grow network as needed
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Evolution of Optical Cable – Microcables
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Smallest – 5.7‐6.3 mm
144 fiber cable example(Traditional cable = 15.7mm)
Smaller – 8.6 mm
Small – 9.7 mm
First generation microcable – GR‐20
Second generation microcables – smaller tubes
3rd and 4th gen – smaller tubes and 200 µm fiber
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96 fiber Trial Difficult route Cable with PA (nylon) sheath 2000 m in approx. 35 minutes
Microcables sometimes require caution• Not as standardized as traditional
OSP cables• GR‐20 rated cables can be pulled
with caution• Next gen microcables should be
blown – less mechanically robust– Requires specialized handling
• Typical cable/microduct fill ratios (diam. to diam.) – 65%‐75%
• Not intended for aerial deployments (without microduct)
• Use caution with FTTH distribution applications requiring expessing in pedestals
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Small Solutions to the MDU/MTU
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Existing methods for MDU/MTU hallway deployments• Traditional methods of hallway cable deployments are often costly and distract from the décor.– Large and visible– Time consuming to install
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Moldings and tapes are typically very visible
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Smaller solutions for hallway deployments
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12 fibers
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Bend Optimization allows for complex hallway deployments
Clean, completed installation
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Summary
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• Bandwidth demand is big, really big, and keeps growing
• Small size lowers cost and increases fiber density
• Outdoors– New OSP fibers help manage smaller bends
• G.657A2 and 9.2 µm MFD– 200 µm fibers enable smaller cables– Rollable Ribbons reduce cable size and weight for large fiber counts– Smaller cables increase fiber density and lower costs
• Indoors– UBIF enables fiber to the MDU/MTU quickly reducing labor costs– Rollable Ribbon allows for smaller, lighter cables in trays and raceways