Reconfigurable OADMs

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Reconfigurable OADMs
ReconfigurableOADM (ROADM)
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ROADM basic functions

• ROADM basic functions
• Add, Drop, Block or Attenuate any wavelength in
  any node controlled by remote management
• Power monitoring and equalization of any
  wavelength
• In Multi-Degree units every port can be
  configured for single wavelength or any size band
  of waves.
• The result is

Fully flexible transport networks
Hitless networks upgrades and changes
Full power monitoring and control
SAVE on spares
SAVE on OPEX
Fast time to market
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Static versus Reconfigurable OADM
Fixed wavelengths network
Node 1
OA
OA
Tunable network
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MRV ROADM Architectures

• LD1600 double long slot size modules. For
  East-West configuration, 4 long slots are
  allocated for ROADM.
• 2 degree (East-West only) 40 ports Mux/Demux
  availability Q4/2006
• Fixed wavelengths on filter ports (40)
• No multiplex fiber solution for ring-ring
  interconnect
• Multi-Degree (1x9 WSS switch) availability
  Q2/2007
• 9 Add/Drop ports
• eliminates add/drop filters
• Fully tunable drop ports (single wavelength or
  multiplex section)
• Enabler for ring to ring or mesh network designs

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LD1600-ROADM40 structure
1 2 3

1. 2 x 1 switch
2. VOA
3. Power Monitor

Insertion losses COM IN-DROP 11 ADD-COM OUT
8 COM IN-EXP OUT2.5 EXP IN-COM OUT12
DROP
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East-West ROADM system configuration
2.5db
12db
11db
8db
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Designing with 2-degree ROADM
2dbm
-18dbm
-13dbm
2dbm
2dbm
ROADM
ROADM
ROADM
ROADM
20db
All channels Are attenuated To mach
PassThrough traffic
0dbm

• Every node looks the same and acts the same
• At each Booster Output ALL channels have the same
  2dbm (due to 40 waves) power