optical fiber communications technology, systems and circuits overview lecturer: ali fotowat ahmady...
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![Page 1: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/1.jpg)
Optical Fiber CommunicationsTechnology, Systems and Circuits Overview
Lecturer: Ali Fotowat AhmadyFeb 7, 2012
Tabriz University Photonics Conference
04/18/23 1Sharif University of Technology
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Agenda
• Why Optical Communications?• Broadband Access Technologies• FTTx PON Technology• GPON: System Overview and Protocol Stack• Optical Transceivers– CMOS Optoelectronic Receiver– CMOS CDR and DEMUX IC
04/18/23 Sharif University of Technology 2
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Traffic Growth and Power Consumption
04/18/23 Sharif University of Technology 3
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Limitations of Electrical LinksMarket Transition from Electrical to Optical
04/18/23 Sharif University of Technology 4
![Page 5: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/5.jpg)
Progress in Optical Communication Technology (2 of 2)
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![Page 6: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/6.jpg)
Trend of Broadband Access Studies
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Dat
a sp
eed
(bps
)
1G
100M
10M
100G
10G
20052000 2010 2015 2020 Year1995
100BaseT
GbE
10GbE
40/100GbE
B-PON
GE-PON
G-PON
10G-EPONNG-PON1
Next target
STM-PON
IEEE802.3 STD
2009.9
2010.5
ADSL
NG-PON2(WDM TDM Hybrid PON)
P-PP-PP-MPP-MP
FTTH20 mill. users10 mill.
(+ SCM-PON for video distribution)
P-P: Point to PointP-MP: Point to MultipointSCM: Subcarrier ModulationNGA: Next Generation Access
max.
min.
Sharif University of Technology
![Page 7: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/7.jpg)
Access: Fiber To The X (FTTx)
04/18/23 7
Service Node
ONU
FTTH
FTTB
FTTC
FTTCab
Optical Fiber
PON SystemxDSL
OLT
ONU NT
NT
FTTC: Fiber To The CurbFTTCab : Fiber To The Cabinet
FTTH : Fiber To The HomeFTTB : Fiber To The Building
Operation System
Internet
Leased Line
VOIP
PSTN
Video
Twisted Pair
ONT
ONT
Passive Optical Splitter
Sharif University of Technology
![Page 8: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/8.jpg)
FTTX PON: The Critical Components
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Optical Optical AmplifierAmplifier
Optical Fiber CableOptical Fiber Cable
ONTONT
WDM WDM CouplerCoupler
1490nm
1310nm
1550nm
Video TXVideo TX
OLTOLT
SplitterSplitter
1490nm1310nm
1550nm
Tx
Rx
Tx
RxRx
Up to 60 km* physical reach(* with G.984.6 Reach Extender)
ONUONU
Access Node
NB
BBCC
E1/DS1
GbE STMn/OCn
(and/or)
Sharif University of Technology
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xPON Comparison
04/18/23 9Sharif University of Technology
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PON Applications
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STM1ONT
STM1ONT
STM1ONT
ATM ONT
10/100BT
Remote DSLAM/DLC
nxT1/E1ONT E1
ONT
1. FTTP
4. DSLAM Aggregation
2. Cellular Backhaul
3. CATV Multiple System Operator
Sharif University of Technology
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GPON Equipments
04/18/23 11
GPON OLT
GPON ONU
GPON ONU
GPON ONTFiber CableTwisted PairElectrical or Optical
Splitter
FTTC
FTTH
Sharif University of Technology
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GPON Equipments
04/18/23 12
10GbE
GbE
GPON
PPPoE
Optical Splitter
ODN
Network processingAdvanced traffic management functionalityGPON Framer
Up to
128
OLT
10/100 Base-T
ADSL2+/VDSL2
10/100/1000 Base-T
2×POTS
WiFi
ONU
ONT
Sharif University of Technology
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Optical “Food Chain”
04/18/23 Sharif University of Technology 13
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Optical Communication Protocol Stack
04/18/23 Sharif University of Technology 14
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ITU-T Recommendations GPON Protocol Stack and Common Functions
04/18/23 Sharif University of Technology 15
Protocol stack for the GTCGPON common functions
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GPON GTC Frame Format
04/18/23 Sharif University of Technology 16
GTC Layer Framing for Downstream and Upstream
Downstream GPON Frame Format
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Generic Optical Fiber System
04/18/23 Sharif University of Technology 17
D QFF
÷ N
N
D QFF
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04/18/23 Sharif University of Technology 18
An 8.5-Gb/s Fully Integrated CMOS Optoelectronic Receiver Using Slope-Detection Adaptive Equalizer, JSCC 2010
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Differential n-well Photodiode
04/18/23 Sharif University of Technology 19
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
Rectangular n-well diodes are covered by light-blocking metals
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Photodiode Responsivity Variation
04/18/23 Sharif University of Technology 20
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
Doping dependency of the photodiode responsivity at 3-dB frequency (5.9 GHz)
temperature dependency of the photodiode responsivity
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Variation of CPD
04/18/23 Sharif University of Technology 21
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
Doping dependencies of CPD Temperature dependencies of CPD
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Proposed OEIC Receiver
04/18/23 Sharif University of Technology 23
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
![Page 23: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/23.jpg)
Proposed Adaptation Circuit
04/18/23 Sharif University of Technology 24
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
![Page 24: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/24.jpg)
Proposed Feedback TIA & DC-Balanced Buffer
04/18/23 Sharif University of Technology 25
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
![Page 25: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/25.jpg)
Proposed Equalization Filter Cell
04/18/23 Sharif University of Technology 26
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
Frequency Response
Simulated frequency response of the proposed equalization filter cell for various capacitor control voltages
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LA First Stage Gain Cell
04/18/23 Sharif University of Technology 27
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
![Page 27: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/27.jpg)
LA Second Stage & Replica Bias Circuit
04/18/23 Sharif University of Technology 28
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
![Page 28: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/28.jpg)
Temperature Variation
04/18/23 Sharif University of Technology 29
Simulated bandwidth of the silicon photodiode and the proposed receiver front-end at various temperatures.
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
![Page 29: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/29.jpg)
Chip microphotograph
04/18/23 Sharif University of Technology 30
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
![Page 30: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/30.jpg)
Measurement
04/18/23 Sharif University of Technology 31
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
![Page 31: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/31.jpg)
Measured Eye-Diagrams
04/18/23 Sharif University of Technology 32
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
Minimal Equalization Optimal Equalization
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Measured BER of OEIC Receiver
04/18/23 Sharif University of Technology 33
LEE et al.: AN 8.5-Gb/s FULLY INTEGRATED CMOS OPTOELECTRONIC RECEIVER USING SLOPE-DETECTION ADAPTIVE EQUALIZER, JSCC 2010
![Page 33: Optical Fiber Communications Technology, Systems and Circuits Overview Lecturer: Ali Fotowat Ahmady Feb 7, 2012 Tabriz University Photonics Conference](https://reader036.vdocument.in/reader036/viewer/2022062515/56649c755503460f949281fa/html5/thumbnails/33.jpg)
LDD (SB350)
04/18/23 Sharif University of Technology 42
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TIA (SB360)
04/18/23 Sharif University of Technology 43
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PA (SB370)
04/18/23 Sharif University of Technology 44
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TIA/PA (SB380)
04/18/23 Sharif University of Technology 45
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Question and Answer
Thanks for your attention…
04/18/23 Sharif University of Technology 46