1. Device test stations
Multi-probe electrical DC injection and optical input/output
Near-field measurement
Analogue characteristics
1) 50GHz Network analyzer, 20GHz Lightwave component analyzer
S-parameter, modulation response, etc.
2) 40GHz RF spectrum analyzer
Two tone SFDR measurement, RIN measurement, amplitude noise and phase noise, etc.
4. Digital characteristics
0.1-12Gb/s HP BERT for BER measurement

2. Multi-probe DC electrical injection and optical input/output
Programmable multi-channel current driver
Device mount with TE-cooler
High-precision stages
Probe holder
Control injection current, input optical power and wavelength
from tunable laser, capture output signal from optical power meter
with GPIB by computer using Labview
Lensed-fibers
Multi-probe platform

3. Near-field measurement
Long focus-distance lens
Microscope
CCD camera
Near-field image
recorded by computer
High-precision 3-D stages
Device mount
Lensed-fiber

4. Two-tone SFDR Measurement for EAM
RF pre-amplifier
Lensed
fiber
TW-EAM
RF Spectrum
Analyzer
Polarizer PD
Pico-Ampere meter A
LD Controller
TEC Controller
Bias-Tee
DC power
Supply
Attenuator
Combiner
f1=10GHz
Isolator 1
Isolator 2
f2=10GHz-100MHz

5. SFDR Measurement results for EAM
15mW optical input
f1=9.9GHz
f2=10GHz
DC Bias=0.8V
SFDR=121dB/Hz^4/5 TM TE f2
RF output (dBm)
2f2-f1
121 dB
Noise floor
RF input (dBm)

6. Modulation response measurement for DBR laser
Lightwave component
Analyzer
DC bias
Lensed-
fiber
DBR
laser
Bias-T
Measurement setup
3-dB modulation bandwidth is about 20GHz.

7. RIN measurement for DBR laser
Measurement setup
Current and
Temperature
controller
DC Bias
Photocurrent
Pico-Am-meter
Photodetector
Optical Power meter
DC-block
RF spectrum
analyzer
RF amplifier

8. Amplitude Noise measurement for 10Gb/s Gain-switched DBR-LD PulsesDC
DBR-LD
RF Amp.
Bias-T
10GHz RF
Fiber
Coupler
10%
Tunable laser
DC Bias
Photocurrent
Pico-Am-meter
RF spectrum
analyzer
RF amplifier
DC-block
Intensity noise with a peak at 5.2GHz
(the relaxation oscillation frequency) at 67.8mA.
RIN is -139dB/Hz at 5.2GHz.
Broadband RMS amplitude noise
is and 0.01 over 24MHz-9GHz
at injection current 67.8mA and 53.4mA, respectively.
RMS SSB amplitude noise is 0.006
over 40kHz-10MHz at injection current 67.8mA .

9. Phase Noise and Timing Jitter measurement setup
10GHz
RF generator
10GHz+1.5MHz
RF generator
Phase
Shifter
(90o)
Residual timing jitter measurement
RF Amp. LO
Low-frequency
pre- amplifier
Double
Balanced
mixer
LPF
Bias-T IF
Low-frequency
RF spectrum
analyzer DC
Fiber
Coupler RF
DBR-LD
Tunable
laser
10%
Absolute timing jitter measurement
DC-block
RF amplifier
RF spectrum
analyzer
Photodetector

10. Measurement Results for 10Gb/s Gain-switched DBR-LD Pulses
Absolute RMS timing jitter
is less then 1-ps over 40kHz-15MHz

11. BER Test Programmable controlled injection current SGDBR laser cw
Wavelength converter
cw
E/O modulator
EDFA
OBPF
Pre-amplifier
RZ Transmitter
OBPF
Pattern
generator
Receiver
data
BERT
Clock