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Ronald van der Meer
12 September 2019
High speed open terminal
Teraflex™
© 2019 ADVA Optical Networking. All rights reserved. Confidential.22 © 2019 ADVA Optical Networking. All rights reserved. Confidential.2
Higher speed optical networksCoherent modulation & DSP
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Electrical Field Vector
Next generation optical layer aspects
It is complex!
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Next generation optical layer aspects
but can be simplified via focus on the most relevant itemsWhat we call a “DWDM Wavelength”
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Shannon Limit
DSP aims to approach Shannon Limit
Fundamental Limits of Transmission
Conditions:• continuous input constellation with Gaussian
probability distribution (optimum)
• No limit on code length (and latency)
𝐶 = 𝐵𝑊 · log2(1 + 𝑆𝑁𝑅)C capacity (bit/s)
BW bandwidth (Hz)
SNR signal to noise ratio
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Optimizing Modulation
Higher Modulation requires Higher (O)SNR
DSP Technology
Linear channel
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840Gb/s gross rate
600G payload
Higher Order Modulation (QAM)
Increasing Baud rate provides highest reach
DSP Technology
4bit/symbol* 6bit/symbol 8bit/symbol 10bit/symbol 12bit/symbol
30 G Symbols/s 70 G Symbols/s
Phase modulation
Baud ratesimilar noise performance at cost of wider spectral density
requires 3dB better OSNR per step
* Two polarizations
QPSK 8QAM 16QAM 32QAM 64QAM
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Spectrum
Interleaving of symbols
Interleaving removes steps in optimization
Ultra flexible modulation
8QAM
16QAM
32QAM
64QAM
Symbolrate (GBd)
noisepenalty
35 69
Continuous bandwidth setting for close adaption to filter passbands
Interleaved modulation removes performance steps
16QAM32
QAM 16QAM32
QAM 16QAM32
QAM
power
time
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Shaping and FEC
27% and 15% FEC: further level to manage reach vs. bandwidth
Market leading DSP provides record performance over any network
Ultra flexible modulation
Shape roll off Emphasize
Performance improvements by shaping of the spectrum using preemphasis and roll off (configurable).
Improved tolerance to distortions by geometrical constellation shaping and in-built compensation of nonlinearities.
Spectrum
Constellation
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Continuous Optimization
280km @ 600G>6000km @ 200GConstellation governs reach @ flexgrid(same spectral density)Adding Raman provides further reach
All-Network Optimization
TeraFlex Reach
69GBd
34GBdLower cost per bit
Metro ptpDCI
Metro Core
LH Core
© 2019 ADVA Optical Networking. All rights reserved. Confidential.1111 © 2019 ADVA Optical Networking. All rights reserved. Confidential.11
TeraFlexTM
Ultra dense Open Terminal
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1RU platform supporting 3.6Tb/s
Record density - Record flexibility
TeraFlexTM
Ultra compactfootprint
Ultra flexible network interfaces
High speed clients10/100/400GE, OTU4 Open API design
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1.2Tbit/s Sled TypesQSFP28 (for 100G client), QSFP-DD (for >100G client)
• 12x QSFP28 per sled• 28G NRZ host lanes• Same as for Quadflex
• 100GE – LR4, CWDM4, ER4, SR4, AOC, DAC, & 3rd Party Optics• 12x 100GE per sled
• 10GE via QSFP28• up to 120x 10GE per sled
• FlexE (50G granularity), RMON, LLDP, MLG
• 3x QSFP-DD• 56G PAM4 host lanes
• 400GE – FR4, DR4, LR4, SR8, LR8, 3rd
party• 3x 400GE per sled
• FlexE (inverse muxing), RMON, LLDP, MLG
12x100G sled 3x400G sled
12x 100G
3x 400G
QSFP28 clients
QSFP-DD clients
TeraFlex provides two sled types : 100GE or 400GEEach with and without Encryption
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Unique submarine demo transports data 6,800km using commercially available transponder
10 December 2018ADVA (FSE: ADV) today announced that its FSP 3000 CloudConnect™ TeraFlex™ has succeeded in transporting 300Gbit/s of data per wavelength over a 6,800km fiber link. Conducted alongside ADVA’s partner Acacia Communications, Inc. (NASDAQ: ACIA), the trial was the first in the industry to cover the trans-Atlantic distance with a fiber link typical of a cost-optimized submarine cable using 300Gbit/s channels and a commercially available transponder with real-time digital signal processing (DSP). The demo, which also achieved the highest spectral efficiency for such a link carrying 300Gbit/s per wavelength with 70GHz channel spacing, highlights the capabilities of the ADVA FSP 3000 TeraFlex™ solution to support flexible, ultra-high-capacity, long-haul and subsea data transport.https://youtu.be/GqqAyZCsGB4
ADVA delivers 300G over trans-Atlantic distance in FSP 3000 TeraFlex™ trial
Thank you
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