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Updated: May 21, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Phase-modulated radio over fiber multimode links.

Ivana Gasulla¹, José Capmany

¹ITEAM Research Institute, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain. igasulla@stanford.edu

|June 21, 2012

Summary

This summary is machine-generated.

This study demonstrates cost-effective, high-frequency digital transmission over multi-mode fiber (MMF) links using phase modulation. The research achieves high bit rates for various data channels, paving the way for broadband radio over fiber systems.

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Last Updated: May 21, 2026

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Area of Science:

Optical Communications
Digital Signal Processing
Fiber Optic Technology

Background:

Multi-mode fiber (MMF) links are widely used but face bandwidth limitations for high-frequency digital transmission.
Direct detection systems offer cost-effectiveness but typically struggle with high data rates and complex modulation schemes.

Purpose of the Study:

To experimentally demonstrate a phase-modulated MMF link for high-frequency digital transmission.
To evaluate the feasibility of using direct detection for broadband radio over fiber (RoF) systems.

Main Methods:

Implementing a phase-modulated MMF link with direct detection.
Transmitting Quadrature Phase-Shift Keying (QPSK), 16-Quadrature Amplitude Modulation (16-QAM), and 64-QAM data channels.
Operating within the microwave frequency range of 6 to 20 GHz over a 5 km MMF link.

Main Results:

Successful subcarrier transmission of QPSK, 16-QAM, and 64-QAM data channels at bit rates up to 120 Mb/s.
Achieved an aggregate bit rate per length product of 144 Gb/s · km.
Demonstrated the potential for increased capacity by accommodating more passband channels.

Conclusions:

The proposed phase-modulated MMF link offers a cost-effective solution for high-frequency digital transmission.
The results confirm the viability of broadband phase-modulated RoF transmission over MMF links.
The system is suitable for multichannel Subcarrier Multiplexing (SCM) signal distribution.