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Regional Optical Networking - The Next Steps. I2 Member Meeting May 2, 2005. Quilt RON Workshops. Goal: Educate the regional community about fiber and optical network opportunities and technologies. 1 st Workshop June ‘04 in Denver “So you think you want some dark fiber?”

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quilt ron workshops
Quilt RON Workshops
  • Goal: Educate the regional community about fiber and optical network opportunities and technologies.
    • 1st Workshop June ‘04 in Denver
      • “So you think you want some dark fiber?”
    • 2nd Workshop Nov. ‘04 in Raleigh
      • “So you’ve got some dark fiber-now what?”
    • 3rd Workshop June ‘05 Newport. RI
      • “So you’ve lit your fiber-now what?”
inaugural workshop
Inaugural Workshop
  • June 2004 at Level 3’s Facility in Broomfield, CO
  • Focus on learning about the acquisition and operational issues associated optical networks.
    • A “Who’s Who of RON Experts from the R&E Community”
    • Not Bad for Beginners!
    • Archive available at:
  • Specific topics
    • Where is the fiber?
    • IRU’s and other legal issues
    • Technical Design
where s the fiber
Where’s the fiber?
  • Presenter - Victor Braud
  • Basic Issues
    • What kind of fiber is it?
    • Where does it go?
    • Who owns it?
    • Do they have any extra?
    • Do they have the right to sell it; if so will they sell it?
  • Can you afford it, including the cost of the:
    • IRU @ $500 to $2500/fiber/mile
    • Collocation @ $500 to $1,200/rack/month + power
    • O&M @ $100 to $300/route mile/year
    • Optronics to light and staff to maintain it?
  • Will the owner allow you reasonable access to it?
  • 20 year partnership with Owner?
indefeasible right to use
Indefeasible Right to Use
  • Presenter - Alex Preiser - Associate Legal Counsel, UCAR
  • Key Legal issues associated with IRU Agreements
      • IRU Defined
      • Key Terms
      • Considerations
      • Strategies
iru key terms
IRU - Key Terms
  • Connection
  • Acceptance Testing
  • Maintenance
  • Construction
  • Fees
  • Performance
  • Property Rights
  • Term/Usage Rights
  • Payments/Taxes
  • Force Majeure
funding the network s
Funding the Network(s)
  • Several models presented
    • Almost as many funding models as there are organizational models
  • Basic Costs
    • General Operations
    • Network Operations Center
    • Allocation of Optical Network
    • Equipment Maintenance
    • Equipment Replacement Allocation
technical design elements and test equipment
Technical Design Elements And Test Equipment
  • Presenter - Steve Cotter
  • Design
    • Optical budget = Output power – Input sensitivity

Steve Cotter – Internet2 / National LambdaRail

technical design
Technical Design
  • Optical budget is affected by:
    • Fiber attenuation
    • Splices
    • Patch panels / connectors
    • Optical components (filters, amplifiers, etc.)
    • Bends in the fiber
    • Contamination (dirt, oil, etc.)
fiber types
Fiber Types
  • SMF (standard, 1310 nm optimized, G.652)
    • Most widely deployed so far, introduced in 1986, cheapest
    • Corning SMF-28
    • Corning SMF-28e
      • ‘extended band fiber – optimized for CWDM
  • DSF (Dispersion Shifted, G.653)
    • Intended for single channel operation at 1550 nm
    • Corning DSF
fiber types con t
Fiber Types, Con’t
  • NZDSF (Non-Zero Dispersion Shifted, G.655)
    • SMF/LS (limited slope) fiber from Corning
    • Later fiber types are engineered for WDM operation in the 1550 nm region only
      • TrueWave, FreeLight, LEAF, E-LEAF, TeraLight…
        • These are the latest generation fibers developed in mid 90’s
        • For better performance with high capacity DWDM systems
        • Optimized for DWDM in the C-band & L-band
      • MetroCor, WideLight are other types
      • Low PMD ULH fibers are also out there
ins and outs of co location
Ins and Outs of Co-location
  • Presenter - Steve Cotter
  • Co-location Site Survey
    • Know How to Get to the site
    • Access
    • Equipment Delivery
    • Inspect the facility
    • Know your costs
      • Power,
      • Cross-connects
      • Labor

Steve Cotter – Internet2 / National LambdaRail

acceptance testing
Acceptance Testing
  • Presenter - Paul Schopis
  • Main Issues
    • Background
        • Adapted lab approach
        • Examples on Web at ITEC sites
    • Layered approach
    • Specific targets
    • Physical Layer
    • Optical Layer
    • Full System
quilt 2 nd ron workshop
Quilt 2nd RON Workshop
  • November/December 2004
    • Raleigh, NC hosted by MCNC.
  • Focus on Equipment available to light up the network.
  • New Approach
    • RFI with a Case Study served as discussion tool.
  • Selected Equipment Vendors Presented
example equipment rfp
Example Equipment RFP
  • Presenter - Scott Gerstenberger
    • MiLR Optronics Acquisition
  • RFP Purpose
    • Gives the vendors the big picture of why you’re doing this.
    • Reduces the number of questions
    • Gives your project more credibility
  • Components
    • Background and Overview
      • Include: general R&E RON activities, about the fiber you have, and an overview of the optronics you want to buy
    • Network Topology and Fiber Specifications
      • Specifics of your fiber (maps, distances, fiber types, fiber providers, loss specifications, colo sites, etc.)
example rfp components cont d
Example RFP Components (cont’d)
  • DWDM System and Bid Requirements - Major section
    • Lay out your optronics design (list of OADM sites, wavelength capacity needed),
    • Trib interfaces you need, the initial specific configuration you plan to buy through the RFP
    • Expected network growth over time and how the vendor’s initial design needs to accommodate this growth,
    • Requirements for alien wavelengths,
    • Timetable, management and maintenance plan.
example rfp components cont d18
Example RFP Components (cont’d)
  • Evaluation Criteria
    • Don’t make this too limiting or overly specific
    • Specifics:
      • Vendor’s ability to comply with the RFP specifications
      • Vendor’s ability to demonstrate the product in their lab
      • Customer references
      • Overall cost (put this last)
  • How to Respond
    • Boiler plate and procedural material your purchasing department requires
connecting to the backbone
Connecting to the Backbone
  • Presenter - Dave Reese
  • Option 1: Co-location
    • RON co-locates in same facility (not in same cage/space) as backbone.
    • Consider bulk fiber bundle between RON and backbone
      • Watch cross-connect fees!
  • Option 2: High fiber count
    • RON builds/buys/leases bulk fiber from nearby location into backbone facility
    • Distance is the limiting factor - some backbone interfaces are short reach ONLY
common ron issues
Common RON Issues
  • Diversity
    • Do you need diverse entrance into backbone facility?
  • Common facility
    • Can you incorporate the backbone facility as integral part of your RON?
  • Will the ILEC make “waves?”
    • Some are now offering reasonable Gig-E, and indicating 10GE availability
    • Depending on your visibility, ILEC may apply pressure to use their services!
quilt 3rd ron workshop
Quilt 3rd RON Workshop
  • June 1-3, 2005
    • Newport, RI, co-hosted by OSHEAN
    • Focus will be on learning more about the issues of operating an optical network
    • Vendor Presentation May 31 – June 1
  • Agenda Topics
    • Optical Network Testing
    • Transition from Layer 3 to Layer 1
    • Optical Network Management Tools
    • Issues Connecting
    • URL:
fiber testing goals
Fiber Testing Goals
  • Operations and Maintenance
    • Is this fiber contiguous
    • Are optical components functioning as they should
    • Are there dirty connectors or bad splices
  • Initial Fiber Characterization
    • Measure span loss
    • Measure optical return loss (reflections)
    • Measure Dispersion
      • Chromatic Dispersion testing required at 10G
      • Chromatic and Polarization mode required at 40G
test equipment overview
Test Equipment - Overview
  • Optical Time Domain Reflectometer
    • Measure attenuation along span
    • Can be used to troubleshoot fiber cuts
  • Optical Spectrum Analyzer
    • Display and measure the power levels of all the lambdas on the fiber
    • Helps ensure waves are balanced
    • Consider purchasing two
    • Want one with at least 2 nm sensitivity
  • Bit Test Set
    • Perform packet loss test to determine your BER
    • We require a 24 hour test before accepting circuits
  • 1310nm / 1550nm Light Source
  • Optical Power Meter
  • Chromatic Dispersion test set
  • SONET / GE / 10GE test sets
fiber test equipment kit
Fiber Test Equipment Kit
  • Fiber Inspection Scope
    • Optical Inspection Scope (<$500)
    • Video Inspection Scope (USB or standalone) ($2-3K)
  • Cleaning Kit ($100)
    • Cleaning sticks, alcohol, and wipes.
  • Laser glasses/goggles ($300)
  • Visual Fault Locator ($300)
  • Loss test set ($1K)
    • Stabilized light source
    • Power meter
    • Look for multi-wavelength units (1310/1550/1625 is common)
    • Loss testing often included with OTDR. Recommend you get both standalone and OTDR option.
otdr configuration
OTDR Configuration
  • Optical Time Domain Reflectometer
    • Buy modular unit that can add features
    • For operations and maintenance (>$50K)
      • OTDR with order of 40dB of dynamic range ($30K)
      • Optical Spectrum Analyzer (OSA) ($30K)
    • For initial fiber characterization, add (total >$100K)
      • Chromatic Dispersion analyzer. Often, vendors will have a CM module with an integrated OTDR, so you can save some money getting this rather than discrete CM and OTDR modules ($20-30K)
      • Polarization Mode Dispersion testing ($60K)
best of breed modular otdr
Best of Breed Modular OTDR
  • Agilent N3900
  • EXFO FTB 400
  • Nettest CMA 5000
    • This unit is OEMed by Corning and sold as the Corning 500 Plus Multitester
  • Informal survey of RON operators indicate most folks have Nettest/Corning or EXFO
  • Some vendors have a trade-in program, so if you have an old crusty OTDR…..