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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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High-fidelity angle-modulated analog optical link.

Di Che, Feng Yuan, William Shieh

|July 28, 2016

Summary

This summary is machine-generated.

Angle modulation for analog optical links offers superior signal-to-noise ratio (SNR) performance over traditional amplitude modulation. This breakthrough enhances fidelity and tolerance for nonlinearities in wireless convergence applications.

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Area of Science:

Optical communications
Wireless convergence
Signal processing

Background:

The suitability of analog versus digital optical links for wireless convergence remains a key debate.
Digital links offer high fidelity but suffer from bandwidth and power consumption issues.
Analog links avoid these penalties but face signal-to-noise ratio (SNR) degradation.

Purpose of the Study:

To introduce and evaluate a novel angle modulation technique for analog optical links.
To demonstrate the potential of angle modulation to overcome SNR limitations in analog systems.
To assess the performance of angle modulation in the context of wireless convergence.

Main Methods:

Proposed angle modulation for analog optical links.
Compared performance against conventional amplitude modulation.
Evaluated SNR and nonlinearity tolerance using digital link (CPRI) equivalent bandwidth.

Main Results:

Angle modulation successfully breaks the SNR ceiling associated with amplitude modulation.
Achieved approximately 30-dB SNR advantage over amplitude modulation within CPRI equivalent bandwidth.
Demonstrated high tolerance to link nonlinearity.

Conclusions:

Angle modulation presents a significant advancement for analog optical links.
Offers ultrahigh link fidelity and improved SNR, surpassing conventional methods.
Ideal for future SNR-hungry analog optical applications, particularly in wireless convergence.