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100-Gb/s TWDM-PON based on 10G optical devices
Optics Express
|July 14, 2016
Summary
This study demonstrates a cost-effective 100G-EPON upgrade using a 25-Gb/s optical signal. The NRZ-OOK format proved superior for high-speed data transmission, offering better launch power and receiver sensitivity.
Area of Science:
- Optical communications
- Next-generation passive optical networks
Background:
- Bandwidth-limited devices pose challenges for upgrading 10G-EPON to 100G-EPON.
- Cost-effective solutions are crucial for next-generation PON deployment.
Purpose of the Study:
- To experimentally demonstrate a 25-Gb/s signal modulation, transmission, and reception for 100G-EPON.
- To investigate optical domain solutions for chirp management, dispersion compensation, and frequency equalization.
Main Methods:
- Utilized a directly modulated laser and a 10 GHz photo-detector for 25-Gb/s signal generation.
- Employed a single delay interferometer for optical domain signal processing.
- Investigated Non-Return-to-Zero on-Off Keying (NRZ-OOK), PAM-4, and duobinary formats.
Main Results:
- Successfully transmitted and received a 25-Gb/s signal using the developed optical scheme.
- NRZ-OOK format exhibited superior performance in launch power and receiver sensitivity compared to PAM-4 and duobinary.
- Optical domain processing effectively managed chirp, dispersion, and frequency equalization.
Conclusions:
- The NRZ-OOK format offers a cost-effective solution for 100-Gb/s TWDM-PON construction.
- Optical domain signal processing presents a viable alternative to digital signal processing for high-speed optical communication systems.
