right approach of 400g optical components for next … mf... · · 2017-09-21fujitsu optical...

Copyright 2014 FUJITSU OPTICAL COMPONENTS LIMITED FUJITSU OPTICAL COMPONENTS CONFIDENTIAL 1

Sep. 25th, 2014

ECOC 2014 Market Focus – Cannes

Yukiharu Fuse

[email protected]

Fujitsu Optical Components Limited

Right approach of 400G optical components

for next Generation Optical Network

mailto:[email protected]


100G optical components have been installed in the field

for years

The network traffic continues growing

Next level of Optical Network is required

Outline of the presentation

100G

400G

1T

This Presentation will review how to implement cost-effective 400G optical

components with the recent progress of optical component technologies.

Right approach of 400Gb/s Optical Components

Line side Optics

Client side Optics


Global IP Traffic

IP Traffic Growth

Required Capacity 3 times in next 5 years

10 times in next 10 years

Contents to increase IP traffic 2013 2018

Internet Video : 64% ⇒ 79%

Optical Network

2000 2010 2015 2020

10G 100G 400G 1T

Internet Video increases rapidly

Required Bitrate (bit/s)

400Gb/s is coming in 2015,

1Tb/s is expected in 2020.

Source: Cisco VNI Global Traffic Forecast, 2013-2018

Business - File Sharing

Business - Video

Consumer - Web & Other Data

Business - Web & Other Data

Consumer - File Sharing

Consumer - Video

51EB

62EB

76EB

91EB

110EB

132EB

Mo

nth

ly t

raff

ic

http://en.wikipedia.org/wiki/File:Netflix_logo.svg


Line side optical Components


Long haul Metro

100G DP-QPSK

100G Line side optics

DP-QPSK, the modulation format of choice for 100G transmission

Different type of Optical components are used

Long Haul : High Performance

Metro : Small size, Pluggable optics

OIF TRP LN

Modulator ICR

High performance

CFP

Digital InP

Mod. Micro

ICR

CFP2

ACO

Small, pluggable

5”x7”

4”x5”


How to Increase Capacity for 400Gbit/s?

Baud rate

Number of carriers

120GHz

90GHz

60GHz

30GHz

1

2

3

4

Modulation

format 64QAM 256QAM 16QAM QPSK

100G

(32Gbaud, DP-QPSK, 1l)

Parameters to increase capacity:

1. Baud rate

2. Modulation format

3. Number of carriers

What about

400Gbit/s?

Reach limits

Ele

ctr

on

ics

lim

its


DP-QPSK

Constellation

DP-QPSK

DP-8QAM

DP-16QAM

DP-16QAM

Baud Rate

32Gbaud

64Gbaud

44Gbaud

32Gbaud

64Gbaud

Capacity per carrier

100G

200G

200G

200G

400G

# of carriers for 400G

4

2

2

2

1

Reach

50%

30%

20%

Spectral Efficiency

DP-64QAM 44Gbaud

10%

400G 1

3%

Modulation Format Options for 400G


Network Solution Advantage

Long haul Higher baud rate Long distance

Metro Higher order modulation High spectrum efficiency

(Cost per bit rate)

How to Increase Capacity in LH & Metro?

Change modulation

format @32Gbaud

QPSK

8QAM

16QAM

32QAM

64QAM

Change baud rate

@QPSK

32G

64G

96G

48G

80G

Lo

ng

Dis

tan

ce

OS

NR

pen

alt

y (

dB

)

Bit rate per carrier with dual polarizations (Gbit/s)


Requirements of Optical Components

for Long Haul and Metro

Importance Required Optical Components

High density Small size

Flexibility Pluggable

“pay as grow”

Cost Adaptive modulation

according to traffic

Components for Metro

Importance Required Optical Components

Distance High performance

OIF Transceiver LN Modulator ICR

Components for Long haul

Adaptive modulation

100G DP-QPSK

150G DP-8QAM

200G DP-16QAM Line card

DSP

DSP

Framer

…

DA

C

AD

C

DA

C

AD

C

4 x baud

ACO

ACO

…

…

Pluggable

DSP

DA

C

AD

C


100G 400G 1T

Baud rate 32G 45G 64G

Modulation DP-QPSK 2 x DP-8QAM 5 x DP-QPSK

Tx

Components

Rx

Components

45Gbaud 2ch integrated Tx/Rx components based on the extension of 100G

technology are suitable for 400G application.

Need new technology investments for higher bandwidth 64Gbaud Tx/Rx

components.

400G Optics for Long haul application ~ Steps up to 1Tbit/s ~

1ch LN modulator

1ch ICR

2ch LN

modulator

2ch ICR

5ch ICR (Higher bandwidth)

5ch LN modulator (Higher bandwidth)

Challenge !

Challenge !

Ready

Ready


Same optical Components can be applied for 100G and 400G application

Need new technology investment of further space-saving Tx/Rx components

required for CFP4-ACO

100G 400G 1T

Baud rate 32G 32G 50G

Modulation DP-QPSK 4 x DP-QPSK

2 x DP-16QAM

6 x DP-QPSK

3 x DP-16QAM

2 x DP-64QAM

Optical

Module

Tx

Components

Rx

Components

CFP2 ACO

InP

Modulator

Micro ICR

CFP4 ACO

Need further

miniaturization

and/or integration

Ready

Micro ICR

InP

Modulator

400G Optics for Metro application ~ Steps up to 1Tbit/s ~

Challenge !

Challenge !

CFP Digital

CFP2 ACO

Ready

Ready


Client side optical Components


100G Client side Optics ~SMF application~

CFP

CAUI 10 x 10G

100GBASE-LR4 100GBASE-ER4

4 x 25G LAN-WDM

CFP2

CEI-28G-VSR 4 x 25G


4 x 25G LAN-WDM

CFP4 CEI-28G-VSR

4 x 25G


4 x 25G LAN-WDM

Form factor : CFP-MSA compliant

Migration to Smaller size & Lower power for Higher density

Optical interface : IEEE802.3 compliant LR4/ER4 : 25G x 4l LAN WDM

4ch Integrated

Optical Device

Discrete

Optical Devices

4ch Integrated

Low Pc

Optical Device

Form Factor CFP CFP2 CFP4

Dimensions (mm) 145 x 82 x 13.6 107.5 x 41.5 x 12.4 92 x 21.5 x 9.5

Power Consumption ~32W ~12W ~6W


How to implement 400G Ethernet module? ~SMF application~

Time

Vo

lum

e

100G

400G

1T

100G 400G 1T

Excess

Cost

Volume

Time

Co

st

Per

Bit

rate

How can we introduce 400G

optical module ?


Candidates of 400G Ethernet module ~SMF application 2km, 10km~

① 50Gb/s PAM4 x 8l ② 50Gb/s NRZ x 8l＞

50Gb/s PAM4 Baud rate : 25Gbd

Multi-level modulation

③ 100Gb/s PAM4 x 4l

100Gb/s PAM4 Baud rate : 50Gbd

Multi-level modulation

④ 100Gb/s DMT x 4l (Discrete Multi Tone)

Discrete multi-tone (DMT) OFDM-based multi-carrier modulation format

Adaptive bit loading for each subcarrier

50Gb/s NRZ Baud rate : 50Gbd

NRZ modulation


100GE 400GE

25Gbps NRZ x 4l

50Gbps PAM4 x 8l

50Gbps NRZ x 8l

100Gbps PAM4 X 4l

100Gbps DMT x 4l

Tx LD / Rx PD

4 8 8 4 4

For 25Gbps (Limiting)

For 25Gbps (Linear)

For 50Gbps (Limiting)

For 50Gbps (Linear)

For 25Gbps (Linear)

Transmission distance

- ~10km ~10km ~2km ~10km

Cost rank - $$ $$$$ $$ $

Transceiver cost mainly depends on internal optical

components cost (TOSA/ROSA).

Internal optical components cost is strongly dependent

on the number of optical components(LDs/PDs), and the

required bandwidth of these components.

Cost Comparison for 400GE options ~SMF application~

Discrete Multi-Tone (DMT) technology reduces both number of optical

components as well as required component bandwidth, resulting in lowest cost.


100GE CFP4 LR4 400GE CDP (based on DMT)

Bitrate/ l,

# of lane 25Gbps/l x 4 100Gbps/l x 4

Block

Diagram

TOSA 25Gbps-Class DFB LD

ROSA 25Gbps-Class PIN TIA

Internal

structure

Leverage 100G technologies

ROSA TOSA

DMT LSI TOSA

ROSA

Common internal optical Components

(TOSA/ROSA) can be used


Line Side Optics

LH and Metro requires different transmission performance and different

optical components, its tendency is more noticeable on Beyond 100G.

• LH : Higher Baud rate enables higher capacity keeping high performance.

45Gbaud Optical Components are suitable for 400G based on the existing

100G components technology.

• Metro : Higher order modulation enables higher capacity with same HW.

CFP2 ACO can be applied not only for 100G but also for 400G.

Client Side Optics

Several implementations (PAM4, DMT, NRZ) are being reviewed as the

candidates of 400G Ethernet (SMF) module.

• DMT technology reduces both number of optical components as well as required

component bandwidth, resulting in lowest cost.

• 400GE based on DMT can use same Optical Devices with 100GE CFP4 LR4.

Leverage 100G matured volume

Smooth migration from 100G with minimum excess cost

Summary

right approach of 400g optical components for next … mf... · · 2017-09-21fujitsu optical...

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