Receiver performance evaluation of various digital optical modulation-demodulation systems in the 0.5-10 µm wavelength region

Author

Yamamoto, Yoshihisa

Author_Institution

NTT Musashino Electrical Communication Lab., Tokyo, Japan

Volume

16

Issue

11

fYear

1980

fDate

11/1/1980 12:00:00 AM

Firstpage

1251

Lastpage

1259

Abstract

Error rate characteristics of various digital optical modulation-demodulation schemes are studied. The main concern is whether we can improve receiving power levels to achieve a prescribed error rate by employing a coherent optical transmission system in place of the presently available amplitude-shift-keyed (ASK) baseband direct detection system. The receiving power level reduction in various modulation-demodulation schemes is calculated by taking into account the optical carrier wavelength, data rate, photodetector performance, local oscillator power level, and number of levels in multilevel codes. The phase-shift-keyed (PSK) homodyne detection system requires the least receiving power. The improvement in the receiving power level compared to the conventional ASK baseband direct detection system is expected to be 16-22 dB at the carrier wavelength of $\\lambda _{c} = 0.5-3 \\mu$ m, 31-36 dB at $\\lambda _{c} = 3-5 \\mu$ m, and 35-40 dB at $\\lambda _{c} = 5-10 \\mu$ m.

Keywords

ASK modulation/demodulation; FSK modulation/demodulation; Infrared modulation/demodulation; Optical fiber receivers; PSK modulation/demodulation; Amplitude shift keying; Baseband; Digital modulation; Error analysis; Local oscillators; Modulation coding; Optical modulation; Optical receivers; Phase shift keying; Photodetectors;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.1980.1070400

Filename

1070400