Photonic crystal fiber nanospectrometer

Mark Reimlinger; Emily Battinelli; Rosalind Wynne

doi:10.1117/12.915207

30 March 2012 Photonic crystal fiber nanospectrometer

Mark Reimlinger, Emily Battinelli, Rosalind Wynne

Proceedings Volume 8346, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2012; 83460T (2012) https://doi.org/10.1117/12.915207
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

A silica-based steering wheel core photonic crystal fiber (SW-PCF) with a nano-featured spectrometer chemical agent detection configuration is presented. The spectrometer chip acquired from Nano-Optic Devices^TM can reduce the size of the spectrometer down to a coin. Results are provided for PCF structures filled with sample materials for spectroscopic identification. Portable and compact spectroscopic detectors with long interaction lengths (> few mm) specially outfitted for extreme environmental conditions are of interest to both military and civil institutions who wish to monitor air/water composition. The featured PCF spectrometer has the potential to measure optical absorption spectra in order to detect trace amounts of contaminants in gaseous or aqueous samples. The absorption spectrum of the SW-PCF detection system was measured as a function of the fiber interaction length and material volume. The SW-PCF measured spectra agreed with reference spectra. The SW-PCF has a core diameter of 3.9μm, outer diameter of 132.5μm. A nearly 5 cm length of the SW-PCF was coupled to the surface of a thin nanofeatured chip. The remaining end of the SW-PCF section is coupled to a laser light source centered at λ=635nm. The diffraction pattern produced by the nano-featured chip is captured by an objective lens and CCD camera for image analysis. The position of the intensity pattern extracted from the analyzed image indicates the spectral components of the absorption characteristics for the detected sample. This nano-featured spectrometer offers spectral resolution down to 0.1nm that makes it possible to detect substances with very detailed spectral features.

Citation Download Citation

Mark Reimlinger, Emily Battinelli, and Rosalind Wynne "Photonic crystal fiber nanospectrometer", Proc. SPIE 8346, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2012, 83460T (30 March 2012); https://doi.org/10.1117/12.915207

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