1. Task 1: All-Optical InP Wavelength Converters
Milan Masanovic, Vikrant Lal, John Barton, Hubert Chou, Joe Summers, Zhaoyang Hu, Xuejin Yan, Dan Blumenthal, Larry Coldren, John Bowers

2. Performance Metrics and Target Goals
l Resolution/Channel Spacing
FSR (nm)
Loss/ Gain (dB)
Pout (mW) BW
tswitch (ms)
RIN (dB/Hz)
AOWC
32 (C-Band)
100 GHz NA
TBD
0.1
2.5 GHz
1.0
< -150
Tunable any lin to any lout operation
Low noise figure
Low power dissipation
Low polarization dependence
Robust dynamic range
Digital and analog operation

3. Technical Approach
Two-stage design: SOA cross-gain (XGM) and cross-phase modulation (XPM)
Tunable any lin to any lout operation using fixed optical filters
Integrated mode converters for low-loss fiber coupling

4. Single and Two-Stage Structures
Input Analog or Digital lin
Optically Controlled MZI-SOA Modulator
Fiber to PIC Mode Matching
Wavelength Converted Analog or Digital lout
SOA
Tunable lout
Optical Filter
SOA
Wavelength Select
Output Gating
Input Analog or Digital lin
Fiber to PIC Mode Matching
Optically Controlled 2-Stage SOA-MZI-SOA Modulator
SOA
Optical Bandpass Filter lint
Fixed Wavelength Laser lint
Wavelength Converted Analog or Digital lout
lint
SOA
Optical Blocking Filter lint
Tunable lout
SOA
Wavelength Select
Output Gating

5. Two-Stage AOWC Operation
1st Stage Wavelength Conversion
2nd Stage Wavelength Conversion
Input
Output
lint
lint l1
l32 l1
l32
l (mm)
l (mm)
1.525
1.560
Fixed Band Reject Optical Filter
1.525
1.560
Fixed Bandpass Optical Filter
C-Band
C-Band

6. Two-Stage Advantages First stage SOA cross-gain (XGM)
Down conversion only to optimize ER
Convert to fixed polarization state of on-board laser
Set quiescent output average power (SOA in saturation)
Any input wavelength mapped to to internal wavelength
Separate internal from input wavelengths using fixed filter
Second stage cross-phase modulation (XPM)
Regenerative digital
Quiescent input operating point set by first stage
SFDR management
Set output wavelength with tunable laser
Single polarization optimized
Operate in inverting mode (XGM is inverting)
Integrated mode converters for low-loss fiber coupling

7. Key Milestones: Baseline
Demonstrate operational chip-on-carrier single-stage SOA-IWC with integrated tunable laser capable of tuning to 32 wavelengths (1550nm C-band).
Measure analog and digital performance
BER, extinction 2.5 Gbps
S12 parameter, RIN, NF, SMSR and 20 GHz
Develop simulation software for active/passive/filter InP integrated photonic circuits
The goal of this program is to investigate and develop the next generation of photonic integrated Chip-Scale optical wavelength converter and wavelength routing platform.

8. Task 1: Research Schedule