Improving measurement sensitivity of the raman gain coefficient in optical fibres using pump/signal simultaneous lock-in detection

A highly sensitive method for measuring the Raman gain coefficient using short lengths of optical fibre is demonstrated. Square-wave modulation is applied to both the pump and the signal, and lock-in detection is performed at the sum modulation frequency. A Raman on/off gain as small as 0.0015 dB ca...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Electronics letters 2006-09, Vol.42 (20), p.1138-1140
1. Verfasser:	ABEDIN, K. S
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Circuit properties Electric, optical and optoelectronic circuits Electronics Exact sciences and technology Integrated optics. Optical fibers and wave guides Optical and optoelectronic circuits
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A highly sensitive method for measuring the Raman gain coefficient using short lengths of optical fibre is demonstrated. Square-wave modulation is applied to both the pump and the signal, and lock-in detection is performed at the sum modulation frequency. A Raman on/off gain as small as 0.0015 dB can be readily measured.
ISSN:	0013-5194 1350-911X
DOI:	10.1049/el:20061915