Ultra-wide band signal generation using a coupling-tunable silicon microring resonator

Area of Science:

• Photonics
• Optical Communications
• Semiconductor Devices

Background:

• Ultra-wide band (UWB) signal generation is crucial for high-speed data transmission.
• Existing methods for UWB signal generation often lack tunability and polarity control.
• Silicon microring resonators offer a compact and efficient platform for optical signal processing.

Purpose of the Study:

• To propose and demonstrate a novel method for generating UWB signals.
• To achieve switchable polarity and tunable bandwidth in UWB signal generation.
• To utilize a silicon microring resonator for efficient optical UWB signal synthesis.

Main Methods:

• Generation of UWB signals using a silicon microring resonator.
• Tuning the microring resonator's coupling regions to control signal characteristics.
• Modulation of an optical carrier with Non-Return-to-Zero Differential Phase Shift Keying (NRZ-DPSK).

Main Results:

• Successful demonstration of UWB signal generation.
• Achieved switchable polarity (negative and positive) of monocycle pulses.
• Demonstrated tunable bandwidth by adjusting microring resonator coupling.

Conclusions:

• The proposed scheme effectively generates UWB signals with controllable polarity and bandwidth.
• Silicon microring resonators provide a viable platform for advanced optical signal generation.
• The demonstrated technique offers flexibility for UWB communication systems.