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A full-duplex CATV/wireless-over-fiber lightwave transmission system
Optics Express
|May 14, 2015
Summary
This study demonstrates a full-duplex fiber-optic system integrating Cable Television (CATV) and wireless services. The innovative lightwave transmission achieves high data rates over fiber and wireless links, showing promising performance metrics.
Area of Science:
- Optoelectronics
- Telecommunications Engineering
- Fiber Optic Communications
Background:
- Traditional fiber-optic systems face challenges in integrating diverse communication services like CATV and wireless.
- Efficiently combining broadband light sources (BLS) and optical modulators is crucial for advanced lightwave transmission.
Purpose of the Study:
- To propose and experimentally validate a full-duplex CATV/wireless-over-fiber lightwave transmission system.
- To investigate the system's performance in integrating microwave (MW) and millimeter-wave (MMW) signals with CATV data.
Main Methods:
- Utilized a system comprising a broadband light source (BLS), optical interleavers (ILs), an intensity modulator, and a phase modulator.
- Employed optical promotion of microwave data signals to millimeter-wave frequencies for fiber-wireless convergence.
- Intensity modulation for CATV signals and phase re-modulation for uplink MW signals were implemented.
Main Results:
- Successfully demonstrated full-duplex transmission over 40-km single-mode fiber (SMF) and 10-m radio frequency (RF) wireless links.
- Achieved good performance in bit error rate (BER), carrier-to-noise ratio (CNR), composite second-order (CSO), and composite triple-beat (CTB).
- The system supported simultaneous 10Gbps/100GHz, 10Gbps/50GHz MMW, 10Gbps/25GHz MW, and 50-550 MHz CATV signals.
Conclusions:
- The developed full-duplex CATV/wireless-over-fiber system offers an attractive solution for integrated communication networks.
- The system demonstrates advancements in merging fiber backbones with CATV/wireless feeder networks.
- Provides a communication channel with advantages for higher data rates and bandwidth, supporting diverse services efficiently.
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