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1988•Electronics LettersRequires access

Optical 4-ary FSK modulation and demodulation experiment

K. Nakanishi, K. Iwashita, Masashi Nakao

Open publisher page 4 citations

Abstract

Experimental results of the new 4-ary FSK modulation and demodulation systems are reported. Two binary signals are directly injected into different electrodes of a 3-electrode DFB-LD, producing an optical 4-ary FSK signal with 1 GHz frequency spacing. For demodulation, two differential detectors convert the 4-ary FSK signal into two binary signals.

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What this paper is about

Experimental results of the new 4-ary FSK modulation and demodulation systems are reported. Two binary signals are directly injected into different electrodes of a 3-electrode DFB-LD, producing an optical 4-ary FSK signal with 1 GHz frequency spacing. For demodulation, two differential detectors convert the 4-ary FSK signal into two binary signals.

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Available abstract

Experimental results of the new 4-ary FSK modulation and demodulation systems are reported. Two binary signals are directly injected into different electrodes of a 3-electrode DFB-LD, producing an optical 4-ary FSK signal with 1 GHz frequency spacing. For demodulation, two differential detectors convert the 4-ary FSK signal into two binary signals.

Key concepts: Frequency-shift keying, Demodulation, Modulation (music), SIGNAL (programming language), Binary number, Detector, Frequency modulation, Electronic engineering

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