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Tunable Laser Multi-Source Agreement based on OIF Implementation Agreement. Agenda. Optical Network Evolution to Tunability Applications of Tunable Lasers in the Network Benefits of Tunability in the Optical Networks Service providers deployment business case OIF MSA Founders

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Presentation Transcript
  • Optical Network Evolution to Tunability
  • Applications of Tunable Lasers in the Network
  • Benefits of Tunability in the Optical Networks
    • Service providers deployment business case
  • OIF MSA Founders
    • iolon, Intel, Santur and Bookham
    • Gaining momentum …
  • MSA scope and objectives
revolutions in fiber optics 1980s
Revolutions in Fiber Optics – 1980s


Enabling Technologies

  • Single l, point-point links
  • Single-mode Fiber
  • InP Lasers

Enabled lower transmission cost

revolutions in fiber optics 1990s
Revolutions in Fiber Optics – 1990s


Enabling Technologies

  • EDFA
  • DFB Lasers
  • Optical Pump Lasers
  • WDM point-to-point links

Increased capacity to reduce total network cost

revolutions in fiber optics today
Revolutions in Fiber Optics – Today


Enabling Technologies

  • Tunable Lasers
  • Tunable Filters
  • Photonic Switching
  • Re-configurable Networks

Reduce both Capital and Operational expenses and increase network flexibility

why tunable devices
Why Tunable Devices?
  • Current DWDM networks are static since unique laser required for each wavelength
    • Provisioning is a local, manual process
    • Expensive, takes weeks
  • Tunable devices enable dynamic DWDM networks
    • Flexible, remote service provisioning under software control
    • Cost savings to carriers by reducing inventory, provisioning and the wavelength contention costs
    • New revenue generating services to carriers for rapidly provisioned services
  • Tunable lasers have become the “Holy Grail” for next generation DWDM networks
tunable lasers have arrived
Tunable Lasers Have Arrived!
  • Tunable lasers, under development for over a decade, have only recently met the basic optical performance requirements
    • New developments have allowed tunable lasers to approach performance levels of fixed lasers
    • Maturation of new technologies
    • Integration of multiple technologies
  • Tunable lasers use a variety of structures and tuning methods
    • Thermally tuned DFBs – single element - narrow thermal tuning
    • Integrated DFB Array –integrated combiner- temperature tuned
    • Switched DFB Array- MEMS switched - temperature tuned
    • DBRs – Distributed Bragg Reflector chips – current tuned
    • SGDBRs – Sampled Grating DBRs – current tuned
    • VCSELs – Vertical Cavity Surface Emitting Lasers – MEMS tuning
    • ECLs – External Cavity Lasers – mechanically tuned
tunable interface networking requirements
Tunable Interface Networking Requirements
  • Better or same optical performance as the fixed wavelength DFB’s
    • Output Power, Linewidth, RIN, SMSR
  • Reliability
    • Meet requirements to support 99.999 network reliability
    • 100% Locking
    • Hitless Tuning
  • Density
    • Small form/factor
    • Low power consumption
  • Revenue Generating services
    • Remote Provisioning and Bandwidth on demand
    • Efficient network utilization
  • Price
    • Same price as fixed wavelength DFB’s
network applications
Sparing /Inventory Mgmt

Back-up laser that can replace any faulty laser in system

Universal Line Card / Transponder

Save inventory and production costs by designing “universal line card”

  • Fast Provisioning
  • Wavelength Conversion
  • Flexible OADM/OS
  • Protection/Restoration
  • Bandwidth on Demand

Dynamic Wavelength Management

Network Applications

These applications reduce cost of operation of networks for Service Providers while enabling new revenue opportunities

example of agile transparent networks


Example of Agile Transparent Networks
  • Transparent Photonic Switch
    • All optical by-pass eliminates OEO costs on express traffic
  • 2. Dynamic Line System
    • Per-l control to enable dynamic wavelength assignment
  • 3. Tunable Edge
    • Full Spectrum Tunable Transponders & Filters
    • Enables instantaneous any-to-any connectivity
  • 4. Photonic Layer Control Plane
    • Auto-Discovery of network topology and photonic properties
    • Automated wavelength routing, engineering & activation
    • Wavelength assignment “on demand”
  • Benefits:
    • Rapid service turn-up with ability to rapidly handle churn
      • Maximum flexibility with limited pre-deployment of capital
    • Highest network availability with additional photonic layer restoration capability
    • Simplified network operations and significant OPEX savings
    • Lowest deployed capital cost
    • Enables photonic flexibility, thereby reducing EXC core size requirements
capex and opex savings

> 35% Savings

> 40% Savings


Capex and Opex Savings

If demand set is known exactly, static transparency can produce lower network cost. In reality, to handle traffic variations, network price is more than doubled with static technology.

Operational savings realized in part by hands-off capabilities. There is also a notable reduction in personnel required to commission network.

network applications12
Network Applications

Sparing and Inventory Savings

Network Life Cycle Costs



$25.6 M

Lowering the cost of network operation










$0.55 M




Conventional DWDM

Systems with Fixed

Wavelength Lasers


Systems with Widely

Tunable Lasers

network applications13
Network Applications

Tunability enables revenue growth

$25 M

Fast provisioning


  • Bandwidth on Demand
  • Wavelength Leasing
  • Short Bandwidth Events
  • Flexible Optical VPN



Conventional DWDM

Systems with Fixed

Wavelength Lasers


Systems with Widely

Tunable Lasers

Increased revenue through the timely delivery of advanced service offering

oif tunable laser msa
OIF Tunable Laser MSA
  • OIF Tunable Laser Implementation Agreement (IA) was endorsed by over 20 companies in Nov 2002
  • MSA Based on OIF Tunable Laser IA
  • Championed by iolon, Intel, Santur and Bookham
  • Benefits
    • Assured supply of new technology from multiple vendors
    • Ensures systems architectures requiring tunablity are supported at the component level
    • Available today – Interoperability Demo in the OIF Booth at OFC!
msa highlights module form factor

76.2 MAX

66 MIN

30 MAX

Primary heat sink surface is top of module

13 MAX

Module Side View



6.5 +/- 3

25.4 +/- 6 (for 50.8mm width)



( For 50.8mm width))

Module Bottom View

50.8 MAX


12mm DIA



M2.5 x 0.45 – 6H , 4 DP



MSA Highlights Module Form Factor
  • Standard module size(s)
  • OIF-IA allows for 3 steps for size reduction
msa highlights optical specifications
Room for key vendors to play: DBRs, DFBs, VCSELs, ECLs

Application Vectors

Optical Fidelity

Ultra Long Haul, Long Haul, Metro

Tuning Speed

10s, 1s, 10ms

MSA Highlights Optical Specifications
  • Provide optical specifications for different application requirements
conclusion the practical msa
Conclusion- The Practical MSA
  • Significant industry traction and agreement
  • MSA based on the OIF-IA for tunable lasers, adds features that are required for practical industry implementation
  • Roadmap to tunable integrated assembly and tunable transponders