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Large Core Fiber Optic Transceivers based on Plastic ...€¦ · • Fiber Optic Transceiver...
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Hong Kong Hong Kong Large Core Fiber Optic Transceivers based on Plastic Molded Packages (Paper ID: EMAP2006-P078) Flora Ho, Elaine Wong, Wai Hung, Steven Ng, Shu-Kin Yau, Gomer Egnisaban, Tony Mangente ASTRI, 5/F, Photonics Center, Hong Kong Science Park, Hong Kong Email: [email protected], Phone: +852-3406-2615, Fax: +852-3406-2601
Transcript of Large Core Fiber Optic Transceivers based on Plastic ...€¦ · • Fiber Optic Transceiver...
Hong KongHong Kong
Large Core Fiber Optic Transceivers based on Plastic
Molded Packages(Paper ID: EMAP2006-P078)
Flora Ho, Elaine Wong, Wai Hung, Steven Ng, Shu-Kin Yau, Gomer Egnisaban, Tony Mangente
ASTRI, 5/F, Photonics Center, Hong Kong Science Park, Hong KongEmail: [email protected], Phone: +852-3406-2615, Fax: +852-3406-2601
Hong KongHong Kong
Outline
• Introduction• Fiber Optic Transceiver Designs• Transmission Performances• FOT Reliability• Summary
Hong KongHong Kong
Short Distance Optical Interconnect Applications
Optical Interconnect
Automotive
Industrial Links
Consumer Electronics
• Infotainment
IDB1394
• Safety & control
• Camera Links
Hong KongHong Kong
Outline
• Introduction•• Fiber Optic Transceiver DesignsFiber Optic Transceiver Designs• Transmission Performances• FOT Reliability• Summary
Hong KongHong Kong
� Low cost lead-frame and plastic
molding technologies
� 850nm VCSEL light source for PCS
fiber solutions
� Data rate from 50Mbps to 1.25Gb/s
� Operation temperature from
-40oC to 105oC (future 125oC)
Fiber Optic Transceivers
• 7-pin TX/RX• Support 1.25Gb/s• LVDS interface
• 4-pin TX/RX• Support 50Mb/s• TTL interface
Hong KongHong Kong
Laser diode driver chip
LDDMPD
LDDLDD
VCSEL
LDD
GND
Vcc
data
power control
• Optical feedback loop & Automatic
gain control
• Coupling optics integrated in FOT
package
Output Power Stabilization
Hong KongHong Kong
Simulated Coupling Tolerances
5
55
5
10
10
10
10
15
15
15
15
20
2020
2025
2525
25
30
3030
303535
3535
4040
40
4040
4545
45
4550
50
50
5055
5555
5560
60 60
6065
65 65
6570
7070
7075
75 75
75
80
80
80
8585
8590
90
90
92
92
92
94
94
94
96
96
96
9898
9999
100
Fiber X-Y offset (mm)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
Fibe
r Z o
ffset
(mm
)
-0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 0.21.8
Fiber x-y offset (mm)
• Coupling to φφφφ200µµµµm PCS fiber • Working distance of 500µµµµm • ����80µµµµm in lateral axis
Hong KongHong Kong
Output Power versus Ambient Temperature
Change of output power < 1 dB over -40ºC to 105ºC ���� Enable tighter transmitter power specification
Po1m PCS fiber (φφφφ200um)
Hong KongHong Kong
Outline
• Introduction• Fiber Optic Transceiver Designs•• Transmission PerformancesTransmission Performances• FOT Reliability• Summary
Hong KongHong Kong
-40oC
+25oC
+105oC
� Data rate = 50 Mb/s (bi-phase)
� Extinction ratio > 10dB
� Uncorrelated jitter < 150 ps
� VCSEL FOTTransmitter Module
Eye Diagrams versus Temperature
Hong KongHong Kong
-40oC
+25oC
+105oC
� Data rate = 50 Mb/s, (bi-phase)
� Input power = -24dB OMA
� Uncorrelated jitter < 800 ps
� FOTReceiver Module
Eye Diagrams versus Temperature
Hong KongHong Kong
• 2^31- 1 PRBS • Extinction Ratio > 9 dB • Total jitter (p-p) < 100 ps
Pattern Generator
Digital Communication Analyzer
10 m PCS fiber
TX
RXTrigger
300Mb/s
600Mb/s
1.25Gb/s
Gigabit Transmission
VCSEL TX MSM-PD RX
Hong KongHong Kong
Outline
• Introduction• Fiber Optic Transceiver Designs• Transmission Performances•• FOT ReliabilityFOT Reliability• Summary
Hong KongHong Kong
FOT Reliability �High Temperature Life
• Test conditions: +105oC, active• 11 samples• Change in power output < 0.5 dB after 3000 hours
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Hong KongHong Kong
FOT Reliability �Low Temperature Life
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• Test conditions: -40oC, active• 11 samples• Change in power output < 0.5 dB after 3000 hours
Hong KongHong Kong
-10.00-9.00-8.00-7.00-6.00-5.00-4.00-3.00-2.00-1.000.00
0 200 400 600 800 1000 1200
Cycles
Opt
ical
pow
er (d
Bm
)
• Test conditions: -40oC to +125oC, passive• 11 samples• Change in power output < 1dB after 1200 cycles
FOT Reliability �Temperature Cycling
Hong KongHong Kong
-10.00
-8.00
-6.00
-4.00
-2.00
0.000 100 200 300 400 500 600 700 800 900 1000
Testing hours
Opt
ical
pow
er[d
Bm
]
FOT Reliability �Temperature Humidity Biased
• Test conditions: 85oC/85% RH, active• 11 samples• Change in power output < 1dB after 1000 hours
Hong KongHong Kong
Summary
• VCSEL based FOT for φ200µm PCS fiber• Stable coupling power: variation < 1dB over -40oC
to +105oC• Gigabit data rate• Reliable: HTOL (105oC) 3000hrs, TC(-40/+105oC)
1200 cycles, THB(85/85) 1000hrs
� Provide high performance and low cost fiber optic solution to automotive and industrial application.
Hong KongHong Kong
Thanks for Your Attention
Q&A
