Future of passive multiplexing Multiplexing beyond 10 G
Future of passive multiplexing & Multiplexing beyond 10 G
From 1 G to 10 G was easy But beyond 10 G? 1 G DWDM 10 G DWDM Dark Fiber Passive Multiplex er ? 25 G 40 G 100 G 400 G
Ingredients for Multiplexing 1 Dark Fiber 2 Multiplexer 3 Light + Transceiver
Ingredients for Multiplexing 1 Dark Fiber 2 Multiplexer 3 Light + Transceiver
Dark Fiber Attenuation → 0 km → → 40 km → → 80 km → Dispersion @1 G → 0 km → → 40 km → → 80 km → @10 G → 0 km → → 40 km → → 80 km →
Dark Fiber Dispersion → 80 km → Attenuation → 80 km → 1310 nm window 1550 nm/DWDM
Ingredients for Multiplexing 1 Dark Fiber 2 Multiplexer 3 Light + Transceiver
ITU grids LWDM DWDM CWDM New ITU band
LWDM multiplexing New ITU band -8 channels -8 x 25 G up to 40 km -regular optics and regular passive muxes -8 x 100 G up to 15 km(future) -used in Korea a lot for 5 G deployment LWDM
CF PDC O Modulation & Coherent 100 G 1 0 • • • More info per “pulse” Needs a lot of processing power = Watts Example CFP 2 -DCO = 20 Watts 3 QSFP 28 is 4, 5 W so cannot work 2 Extra “active box” for the CFP 2 -DCO 1 0 DSP chip
QSFP 28 DWDM • • • 100 G DWDM in QSFP 28 PAM 4 modulation Need Amplification and Dispersion Comp Cheapest and easiest 100 G Multiplexing method Microsoft pushed this product Solid Optics offer “All in one box” for 16 x 100 G EDFA+TD CM+MU X DM W D G 100
Summery LWDM / 40 km @ 8 x 25 G LWDM QSFP 28 / 80 km @ 100 G M D W D P QSF CFP 2 -DCO / 120 km @100 G QSFP SR
Workshop
Q&A Wouter van Diepen wouter@solid-optics. com
- Slides: 14