Coherent optical communications: opportunities & challenges

Author

Pappert, Steve

Author_Institution

MIcrosystems Technol. Office, Defense Adv. Res. Projects Agency, Arlington, VA, USA

Volume

2

fYear

2004

fDate

7-11 Nov. 2004

Firstpage

1001

Abstract

This paper explores the opportunities and challenges of developing coherent optical transceiver and modem technology and identifies digital and analog application areas of interest. Also, synchronous versus asynchronous detection, heterodyne versus homodyne detection, and on-off keying (OOK) versus complex signaling formats (e.g. Mary PSK or QAM) will be assessed from a system performance/hardware complexity perspective. The laser, modulator, balanced receiver and associated high-speed electronics challenges will be identified. This paper will also outline some of the current limitations of analog intensity modulation direct detection (IMDD) optical transmission systems and point out increasing opportunities for the use of coherent analog modulation and detection technology.

Keywords

amplitude shift keying; heterodyne detection; homodyne detection; intensity modulation; light coherence; modems; optical communication; optical modulation; optical receivers; optical transmitters; phase shift keying; quadrature amplitude modulation; transceivers; Mary PSK; OOK; QAM; analog intensity modulation direct detection; asynchronous detection; coherent optical communications; coherent optical transceiver; heterodyne detection; homodyne detection; modem; on-off keying; synchronous detection; High speed optical techniques; Intensity modulation; Modems; Optical fiber communication; Optical mixing; Optical modulation; Optical receivers; Phase shift keying; Quadrature amplitude modulation; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Society, 2004. LEOS 2004. The 17th Annual Meeting of the IEEE

Print_ISBN

0-7803-8557-8

Type

conf

DOI

10.1109/LEOS.2004.1363585

Filename

1363585