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Proceedings Paper

Tunable "continuous fiber" bandpass filters
Author(s): Kevin J. McCallion; Walter Johnstone; Brian Culshaw
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Paper Abstract

We report on the realization and investigation of a novel `continuous fiber' device structure whose spectral response is that of a comb-type bandpass filter. Filter response was investigated as a function of overlay refractive index and thickness for both oil and solid-state overlays. Passband linewidths (FWHM) of < 5 nm, insertion losses of 0.5 dB and free spectral range 25 - 250 nm have been demonstrated. The filter response was tuned over a 45 nm range by variation of the overlay superstrate index. In addition, the use of lithium niobate as the overlay offers the potential for electro-optic tuning and this topic is currently being investigated.

Paper Details

Date Published: 3 October 1994
PDF: 8 pages
Proc. SPIE 2289, Doped Fiber Devices and Systems, (3 October 1994); doi: 10.1117/12.188707
Show Author Affiliations
Kevin J. McCallion, Univ. of Strathclyde (United Kingdom)
Walter Johnstone, Univ. of Strathclyde (United Kingdom)
Brian Culshaw, Univ. of Strathclyde (United Kingdom)


Published in SPIE Proceedings Vol. 2289:
Doped Fiber Devices and Systems
Michel J. F. Digonnet, Editor(s)

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