A self-protected colorless WDM-PON with 2.5 Gb/s upstream signal based on RSOA

Area of Science:

• Optical Communications
• Telecommunications Engineering

Background:

• Passive optical networks (PONs) are crucial for broadband access.
• Wavelength Division Multiplexing (WDM) enhances PON capacity.
• Reflective Semiconductor Optical Amplifiers (RSOAs) offer cost-effective ONU solutions.

Purpose of the Study:

• To propose and demonstrate a colorless WDM-PON system.
• To achieve 2.5 Gb/s data rates using RSOA-based ONUs.
• To implement and evaluate a self-protected architecture against fiber faults.

Main Methods:

• Utilized self-seeding Fabry-Perot laser diodes (FP-LDs) in the OLT for SLM CW optical sources.
• Employed RSOA-based ONUs for colorless WDM-PON operation.
• Investigated a self-survivable architecture for fiber fault protection.

Main Results:

• Successfully demonstrated a colorless WDM-PON at 2.5 Gb/s.
• Validated the effectiveness of the RSOA-based ONUs.
• Showcased the functionality of the self-protected architecture against fiber faults.

Conclusions:

• The proposed colorless WDM-PON architecture using RSOA-based ONUs is feasible and effective.
• The self-protected design enhances network resilience against fiber failures.
• This approach offers a promising solution for high-capacity and reliable optical access networks.