Reconfigurable OADMs Reconfigurable OADM ROADM Slide No 1

Reconfigurable OADMs Reconfigurable OADM (ROADM) Slide No. 1 Optical Networking Technologies TM

ROADM basic functions 4 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. 4 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 Slide No. 2 Optical Networking Technologies TM

Static versus Reconfigurable OADM Node 1 OA Fixed wavelengths network Node 5 OA Node 2 Node 3 Node 4 Node 8 Node 9 Node 1 OA Tunable network Node 5 Node 2 Node 4 Slide No. 3 OA Node 3 Optical Networking Technologies TM

MRV ROADM Architectures 4 LD 1600 double “long” slot size modules. For East-West configuration, 4 “long” slots are allocated for ROADM. 4 2 degree (East-West only) 40 ports Mux/Demux – availability Q 4/2006 – Fixed wavelengths on filter ports (40) – No multiplex fiber solution for ring-ring interconnect 4 Multi-Degree (1 x 9 WSS switch) – availability Q 2/2007 – – Slide No. 4 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 Optical Networking Technologies TM

LD 1600 -ROADM 40 structure 1 2 3 1. 2 x 1 switch 2. VOA 3. Power Monitor DROP Slide No. 5 I=1…. 40 Insertion losses COM IN-DROP = 11 ADD-COM OUT =8 COM IN-EXP OUT=2. 5 EXP IN-COM OUT=12 Optical Networking Technologies TM

East-West ROADM system configuration 12 db 8 db Slide No. 6 2. 5 db 11 db Optical Networking Technologies TM

Designing with 2 -degree ROADM -13 dbm +2 dbm ROADM 20 db -18 dbm ROADM +2 dbm All channels Are attenuated To mach Pass. Through traffic 0 dbm • Every node looks the same and acts the same • At each Booster Output ALL channels have the same +2 dbm (due to 40 waves) power Slide No. 7 Optical Networking Technologies TM