Grating–fiber coupler as a high-resolution spectrometer
- 1 June 1985
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 10 (6) , 291-293
- https://doi.org/10.1364/ol.10.000291
Abstract
An in-line, single-mode fiber-optic spectrometer is described and analyzed. Its key element is a photoresist grating placed in the evanescent field near the core on a side-polished fiber. Fabrication and nearly diffraction-limited performance (resolution Δλ ≈ 1 nm) are reported, and means are proposed to increase the resolution by several orders of magnitude.Keywords
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