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Accurate measurements of differential chromatic dispersion and contrasts in an hectometric silica fibre interferometer in the frame of ’OHANA project
- Source :
-
Optics Communications . Mar2004, Vol. 232 Issue 1-6, p31. 13p. - Publication Year :
- 2004
-
Abstract
- In the frame of ’OHANA project (phase II), IRCOM institute characterizes the 300-m long silica fibres which will link the Canada–France–Hawaii-Telescope and the Gemini telescope. In this paper, we report a method to compensate the differential chromatic dispersion between two 300-m long silica polarization-maintaining fibres. We experimentally show that the differential dispersion is not the same on each neutral axis of the fibre. Moreover, thanks to a channeled spectrum analysis, we are able to foresee the evolution of the contrast as a function of the wavelength and the spectral resolution over a given spectral band. Consequently, we are able to adjust the fibre lengths in order to maximize the contrast over J spectral window. [Copyright &y& Elsevier]
- Subjects :
- *TELESCOPES
*DISPERSION (Chemistry)
Subjects
Details
- Language :
- English
- ISSN :
- 00304018
- Volume :
- 232
- Issue :
- 1-6
- Database :
- Academic Search Index
- Journal :
- Optics Communications
- Publication Type :
- Academic Journal
- Accession number :
- 12170725
- Full Text :
- https://doi.org/10.1016/j.optcom.2003.12.052