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In-fiber spectrometer using tilted fiber gratings

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5 Author(s)
Feder, K.S. ; OFS Labs., Murray Hill, NJ, USA ; Westbrook, P.S. ; Ging, J. ; Reyes, P.I.
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We demonstrate a compact in-fiber low-resolution spectrometer. Wavelength resolution of 7 nm was achieved using the core radiation-mode coupling of a tilted grating in an optical fiber with a photosensitive cladding. We applied the device to measure the powers of a multiwavelength Raman pump source.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 7 )