CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Fiber based one-way time transfer with enhanced accuracy

Sven-Christian Ebenhag (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Per Olof Hedekvist (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Jan M. Johansson (Institutionen för rymd- och geovetenskap, Rymdgeodesi och geodynamik)
24th European Frequency and Time Forum, EFTF 2010; Noordwijk; Netherlands; 13 April 2010 through 16 April 2010 (2010)
[Konferensbidrag, refereegranskat]

To meet the request for access to accurate and reliable time, several time and frequency transfer methods using optical fibers have been developed or are under development. These fiber based techniques will overcome the issues of vulnerability in radio- and satellite solutions; however, they all rely on two-way transmission when variations in transfer time must be compensated for. As an alternative, a one-way transmission over fiber optic WDM-network has been proposed, with estimation of variation in transfer time based on detection of transfer time difference between two co-propagating lightwaves at different wavelengths. The technique was presented previously when the two wavelengths were far apart. Here we present results from an experiment where both wavelengths are within the optical C-band, i.e. within the gain bandwidth of Erbium-doped fiber amplifiers. Thereby it is proven that the technique is usable to a larger extent than previously demonstrated.

Article number 6533648

Denna post skapades 2010-11-25. Senast ändrad 2016-08-19.
CPL Pubid: 129590