Increasing Silicon integration leads to better performance in optical links but necessitates a corresponding co-design strategy in both electronics and photonics. In this project a 3D-integrated CMOS/Silicon-photonic receiver is presented. The receiver is specifically designed to take advantage of low-cap 3D integration and advanced silicon photonics.
As the resonance wavelength of micro-ring modulators is susceptible to temperature fluctuations, they require thermal tuning. The power consumed by wavelength stabilization circuitry is often higher than the transmitter itself. In this project a monolithic PTAT temperature sensor is proposed for low-power thermal stabilization of micro-ring resonator modulators through direct measurement of temperature.
https://www.mics.caltech.edu/wp-content/uploads/2017/10/Silicon-Photonics-250-x-250.jpg250250awp-admin/wp-content/uploads/2017/10/mics-logo-grey-100.pngawp-admin2017-09-02 04:53:192025-04-15 16:32:54PTAT Temperature Sensor for Micro-Ring Resonator Stabilization
In design of Micro-ring modulators it is desirable to have high-Q rings since for a given extinction ratio a higher Q results in better energy efficiency. However, there is a trade-off between the Q of the ring resonator modulator and its optical bandwidth. In this project we propose a new structure is proposed that breaks the optical bandwidth/quality factor trade-off known to limit the speed of high-Q micro-ring modulators. This structure, called the “differential ring modulator”, maintains a constant energy in the ring to avoid pattern-dependent power droop.
https://www.mics.caltech.edu/wp-content/uploads/2017/08/Diff.png14851905awp-admin/wp-content/uploads/2017/10/mics-logo-grey-100.pngawp-admin2017-08-31 18:26:562025-04-15 16:32:54Differential Ring Modulator
On-Chip Clocking and Communication
3D-Integrated High-sensitivity Optical Receiver
Increasing Silicon integration leads to better performance in optical links but necessitates a corresponding co-design strategy in both electronics and photonics. In this project a 3D-integrated CMOS/Silicon-photonic receiver is presented. The receiver is specifically designed to take advantage of low-cap 3D integration and advanced silicon photonics.
PTAT Temperature Sensor for Micro-Ring Resonator Stabilization
As the resonance wavelength of micro-ring modulators is susceptible to temperature fluctuations, they require thermal tuning. The power consumed by wavelength stabilization circuitry is often higher than the transmitter itself. In this project a monolithic PTAT temperature sensor is proposed for low-power thermal stabilization of micro-ring resonator modulators through direct measurement of temperature.
Differential Ring Modulator
In design of Micro-ring modulators it is desirable to have high-Q rings since for a given extinction ratio a higher Q results in better energy efficiency. However, there is a trade-off between the Q of the ring resonator modulator and its optical bandwidth. In this project we propose a new structure is proposed that breaks the optical bandwidth/quality factor trade-off known to limit the speed of high-Q micro-ring modulators. This structure, called the “differential ring modulator”, maintains a constant energy in the ring to avoid pattern-dependent power droop.