silicon-based optical transceiver - yonsei
TRANSCRIPT
Silicon-based Optical Transceiver
1
• 25-Gb/s Silicon-based monolithic optical transceiver block diagram
“Development of CMOS-compatible optical components is of paramount importance” (ITRS Road 2009 – Interconnect, p.56)
20 Gb/s Optical Receiver for Ge Photodetector
2
Signal
TIA OCN PA OB
50-Ω MatchingResistance
V-I ConvertingResistance
CPD
<Block diagram> <Chip photo>
<Magnitude response>
108 109 101065
70
75
80
Mesured transimpedance gain Simulated transimpedance gain
Tran
sim
peda
nce
Gai
n [d
BΩ
]
Frequency [Hz]
74.5 dBΩ
12 GHz
<Eye diagram of 20-Gb/s data>
Process TSMC65-nm GP
Supply 1.2 V
Input cap 30 fF
Bandwidth 12 GHz
Power (@1.2 V) 120 mW W/O buffer
Area 0.0434 mm2
Gain 74.5 dBΩ
GD (ps) 30 ps
Noise
20 Gb/s Optical Receiver for Hybrid-Integration
3
Photod
etector
Equivalent Ciru
it
Optical receiver circuitPDequivalent
circuit
0.5 mm
0.44
mm
86 dBΩ
12 GHz
108 109 101082
84
86
88
Tran
sim
peda
nce
Gai
n [d
BΩ
]
Frequency [Hz]
Simulation (LBW = 0.8 nH) Measurement
Process SEC 65 nm
Supply 1.2 V
Input cap 227 fF
Bandwidth 12 GHz
Power (@1.2 V) 84 mW W/O buffer
Area 0.22 mm2
Gain 74.5 dBΩ
GD (ps) 30 ps
Noise
<Block diagram> <Chip photo>
<AC response> <BER curve & eye diagram>