1. University of California
Integrated Optical Wavelength Converters and Advanced Structures for WC
Laterally Tapered Structures for wideband WC X. Yan Traveling Wave EAMs for Reduced Power and WC H. F. Chou
University of California
Santa Barbara, CA
Tel: (805) ;

2. Advances Needed
Broadband splitters
Windows for lower reflection
Mode converters for lower loss
Low voltage, high speed modulators
Integrated Wavelength Converters

3. Low Voltage Modulators
-70
-60
-50
-40
-30
-20
-10 1 2 3 4 5 6 7 8
300 m
device
400
700 mm
TE polarization
TM polarization l
= 1555 nm
Reverse Bias (V)
Transmission (dB)
QCSE for low voltage
Traveling Wave for low voltage

4. Traveling Wave EAMs
Bias (V)
Transmission (dB) TE TM
PMGI bridge
Waveguide
n-contact
p-contact
CPW feedline
20 dB Change in 0.7 V: Good for Wavelength Conversion

5. 40 GHz Frequency Response
End View
Ground
3 dB
Waveguide
Input CPM line
Output CPM line