A single InP-on-SOI microdisk for high-speed half-duplex on-chip optical links

Area of Science:

• Photonics
• Materials Science
• Electrical Engineering

Background:

• Silicon photonics offers advantages for integrated optical circuits.
• Indium phosphide is a key material for optoelectronic devices.
• Heterogeneous integration enables combining different material properties on a single chip.

Purpose of the Study:

• To demonstrate a novel device combining modulation and photodetection.
• To investigate the high-speed performance of an integrated indium phosphide microdisk.
• To validate the dual functionality of the microdisk for optical communication.

Main Methods:

• Heterogeneous integration of an indium phosphide microdisk onto a silicon-on-insulator waveguide.
• Electrical contacting of the microdisk for device operation.
• High-speed testing of modulation and photodetection capabilities.

Main Results:

• Successful demonstration of a single device acting as both modulator and photodetector.
• Achieved high-speed operation up to 10 Gb/s for both functions.
• Presented bit-error rate measurements confirming device performance.

Conclusions:

• A single indium phosphide microdisk can serve as a versatile component in photonic integrated circuits.
• This integrated device simplifies optical system design.
• The demonstrated technology supports high-speed optical data transmission.