Method to sensitize an arc‐induced LPFG‐based sensor using double‐pass configuration

<jats:title>ABSTRACT</jats:title><jats:p>The sensitivity of the arc‐induced long period fiber grating (LPFG) sensor was improved utilizing the double‐pass configuration. The sensitivity in terms of transmission attenuation of the resonance wavelength for the double‐pass LPFG configuration was better compared to the single‐pass configuration when it was used to monitor the avidin–biotin interaction over a period of 60 min. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2766–2769, 2014</jats:p>