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Active optical pre-compensation in short range frequency transfer in optical single-mode fiber

Per Olof Hedekvist (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Sven-Christian Ebenhag (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; K. Jaldehag
2011 Joint Conference of the IEEE International Frequency Control Symposium/European Frequency and Time Forum Proceedings (1075-6787). p. 315-316. (2011)
[Konferensbidrag, refereegranskat]

Short distance fiber based optic distribution of time and frequency is often considered sufficiently stable and therefore, uncompensated one way transfer is used. However, when fiber distances increase to a few km, and a substantial amount of the fiber is installed outdoors or in aisles and attics without temperature control, the delay through the fiber may vary substantially. Since the variations are slow, a microwave frequency modulated on an optical carrier may be assumed to remain sufficiently stable. The time delay through the fiber will nevertheless depend on the extremes of the temperature variation which must be taken into account or compensated for. This study presents the design issues of a real time compensation and some results of an optical compensation technique.

Denna post skapades 2011-11-30. Senast ändrad 2017-09-29.
CPL Pubid: 149296


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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Fotonik


Elektroteknik och elektronik

Chalmers infrastruktur