All-optical pseudo noise sequence generator using a micro-ring resonator.

Area of Science:

• Photonics
• Optical Engineering
• Information Technology

Background:

• Pseudo-noise (PN) sequences are crucial for various applications, including secure communications and testing.
• Generating PN sequences in the optical domain offers potential advantages in speed and bandwidth.
• Existing methods for optical PN sequence generation can be complex or limited in performance.

Purpose of the Study:

• To propose and analyze a novel scheme for generating pseudo-noise (PN) sequences in the optical domain.
• To demonstrate the feasibility of using micro-ring resonator (MRR)-based D flip-flops for this purpose.
• To establish the potential of the proposed device as a fundamental building block for advanced optical systems.

Main Methods:

• The proposed device utilizes cascaded units of micro-ring resonator (MRR)-based D flip-flops.
• Each D flip-flop is designed with a single MRR.
• Multiple MRR-based D flip-flops share a common optical pump signal for synchronized operation.
• Numerical analysis and simulations were conducted to evaluate the device's performance.

Main Results:

• Simulated results demonstrate the successful generation of PN sequences in the optical domain.
• The cascaded MRR-based D flip-flop architecture proves effective for PN sequence generation.
• The shared optical pump signal enables efficient and synchronized operation of the D flip-flop units.

Conclusions:

• The proposed scheme offers a viable method for optical PN sequence generation.
• The MRR-based D flip-flop is a suitable building block for this application.
• The developed device holds promise for advancing optical computing and information processing systems.