Road to more network flexibility
This presentation is the property of its rightful owner.
Sponsored Links
1 / 11

ROAD to More network flexibility PowerPoint PPT Presentation


  • 67 Views
  • Uploaded on
  • Presentation posted in: General

ROAD to More network flexibility. Jean Jennen ([email protected]) Bell Labs Europe. Outline. Value proposition of ROADMs Broadcast & select ROADM Basic building blocks In-service ROADM upgrades Example link layouts Future outlook Conclusions Q&A. Value proposition of ROADMs.

Download Presentation

ROAD to More network flexibility

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Road to more network flexibility

ROAD to More network flexibility

Jean Jennen ([email protected])

Bell Labs Europe

Lucent Technologies – ProprietaryUse pursuant to company instruction


Outline

Outline

  • Value proposition of ROADMs

  • Broadcast & select ROADM

  • Basic building blocks

  • In-service ROADM upgrades

  • Example link layouts

  • Future outlook

  • Conclusions

  • Q&A

Lucent Technologies – ProprietaryUse pursuant to company instruction


Value proposition of roadms

Value proposition of ROADMs

  • Reconfigurable Optical Add/Drop Multiplexers offer

    • Add/drop of any wavelength, anywhere, anytime

      • Increased network efficiency

      • Easier operation over time

    • Bandwidth-on-demand

      • Means to easily address network provider’s capacity and flexibility needs for metro access applications

      • Cost reduction of planning and engineering activities over the network’s service life time

    • Optical bypass

      • Reduction of OEO converter costs by elimination of redundant receivers and transmitters

Lucent Technologies – ProprietaryUse pursuant to company instruction


Broadcast select roadm

Broadcast & select ROADM

DCEDynamic Channel Equalizer, e.g. wavelength blocker

OAOptical Amplifier

OMONOptical Monitor

OA

OA

DCE

Set DCE to achieve desired flatness or to block add/drop channels

Spectrum

OMON

Drop ports

Add ports

System

software

Measured

channel

powers

Lucent Technologies – ProprietaryUse pursuant to company instruction


Basic building blocks

OA

Optical In-Line Amplifier

(ILA)

End Terminal

(Degree 1 ROADM)

Drop ports

Drop ports

OA

Add ports

Add ports

OA

OA

Add ports

DCE

Drop ports

Wavelength

Cross-Connect

(WXC)

OA

OA

Reconfigurable

Optical Add Drop Mux

(Degree 2 ROADM)

DCE

Basic building blocks

Lucent Technologies – ProprietaryUse pursuant to company instruction


In service roadm upgrades

OA

OA

OA

OA

OA

Drop ports

Drop ports

Drop ports

Drop ports

Drop ports

Drop ports

Drop ports

OA

OA

OA

OA

OA

Add ports

Add ports

Add ports

Add ports

Add ports

Add ports

Add ports

OA

OA

OA

OA

OA

OA

OA

Add ports

Add ports

Add ports

Add ports

Add ports

DCE

DCE

DCE

DCE

DCE

DCE

DCE

DCE

DCE

Drop ports

Drop ports

Drop ports

Drop ports

Drop ports

DCE

DCE

DCE

DCE

OA

OA

OA

OA

OA

DCE

OA

OA

In-service ROADM upgrades

Degree 1 ROADM

Co-located degree 1 ROADM from independent link

In-service upgrade to degree 2 ROADM

Third co-located degree 1 ROADM

In-service upgrade to degree 3 WXC

In-service upgrade to degree 4 WXC

Degree 1 ROADM

Co-located degree 1 ROADM from independent link

In-service upgrade to degree 2 ROADM

Third co-located degree 1 ROADM

In-service upgrade to degree 3 WXC

In-service upgrade to degree 4 WXC

Degree 1 ROADM

Co-located degree 1 ROADM from independent link

In-service upgrade to degree 2 ROADM

Third co-located degree 1 ROADM

In-service upgrade to degree 3 WXC

In-service upgrade to degree 4 WXC

Degree 1 ROADM

Co-located degree 1 ROADM from independent link

In-service upgrade to degree 2 ROADM

Third co-located degree 1 ROADM

In-service upgrade to degree 3 WXC

In-service upgrade to degree 4 WXC

Degree 1 ROADM

Co-located degree 1 ROADM from independent link

In-service upgrade to degree 2 ROADM

Third co-located degree 1 ROADM

In-service upgrade to degree 3 WXC

In-service upgrade to degree 4 WXC

Degree 1 ROADM

Co-located degree 1 ROADM from independent link

In-service upgrade to degree 2 ROADM

Third co-located degree 1 ROADM

In-service upgrade to degree 3 WXC

In-service upgrade to degree 4 WXC

Degree 1 ROADM

Co-located degree 1 ROADM from independent link

In-service upgrade to degree 2 ROADM

Third co-located degree 1 ROADM

In-service upgrade to degree 3 WXC

In-service upgrade to degree 4 WXC

Lucent Technologies – ProprietaryUse pursuant to company instruction


Example link layouts

Example link layouts

WXC

Degree 2 ROADM

End

Terminal

Degree 1 ROADM as End Terminal

ILA

Degree 2 ROADM

Degree 4 WXC

Degree 1 ROADM

Degree 3 WXC

WXC

WXC

Full Ring

Full Ring

WXC

Degree 1 ROADM as End Terminal

Lateral Extension Degree 2 ROADM

WXC ROADMs part of same line system

Degree 2 Minimally Equipped Mesh ROADMs

WXC

Degree 4 WXC

WXC

Lucent Technologies – ProprietaryUse pursuant to company instruction


Future outlook

Future outlook

  • Limitations of broadcast & select ROADMs

    • Relatively high through path loss due to splitters and couplers

    • The need for additional wavelength blockers (DCEs) for upgrades to wavelength cross-connects

  • Requirements for alternative solutions

    • Development of ROADM components that act as per wavelength reconfigurable 1x2 or 2x2 optical switches

    • Through path loss and power consumption of these components should not exceed half the respective values of the B&S solution

Reconfigurable

add/drop block

Reconfigurable

2x2 switch

Lucent Technologies – ProprietaryUse pursuant to company instruction

drop

add


Future outlook continued

Future outlook [continued]

  • Additional benefits of reduced through path loss and power consumption

    • The ability to build larger and more complex functions like 4x4 cross-connects

    • More ROADMs can be cascaded in-between repeaters

    • Both CAPEX and OPEX are reduced

      • Less power consumption directly affects OPEX

      • Reduced through path loss requires less amplification along the links and consequently reduces CAPEX and OPEX due to the smaller number of in-line amplifiers

Lucent Technologies – ProprietaryUse pursuant to company instruction


Conclusions

Conclusions

  • ROADMs enhance network flexibility and efficiency

  • In-service upgrades offer cost-effective network planning and engineering

  • WXCs based on ROADM building blocks allow for different physical topologies on a per wavelength basis

  • New ROADM concepts are needed to build even larger WXCs while limiting power consumption and through path losses

  • Lower through path losses also enhance ROADM cascadability, thus further reducing the number of repeaters in the network

Lucent Technologies – ProprietaryUse pursuant to company instruction


Road to more network flexibility

Q&A

Lucent Technologies – ProprietaryUse pursuant to company instruction


  • Login