Abstract: A microstructured optical fiber sensor for sensing changes in a physical characteristic up to a predetermined temperature is disclosed. The sensor includes a microstructured optical fiber and a fiber Bragg grating formed in the microstructured optical fiber by generating a periodic modulation in the refractive index along a core region of the suspended core. The fiber Bragg grating is configured to produce a band reflection spectra including a fundamental mode and a plurality of higher order modes whose respective wavelengths vary in accordance with changes in the physical characteristic at the core region of the microstructured optical fiber. The microstructured optical fiber is configured to increase the confinement loss of the plurality of higher order modes of the band reflection spectra relative to the fundamental mode.

Abstract: An electronic advertising system anonymously directs the attention of a user to content provided by an advertiser, in exchange for subsequently permitting the same user to access otherwise restricted desirable content of another part. Such desirable content may include online entertainment media, digital video content, social media, news media, and other privileged services or data. The user accumulates points, or virtual currency, in exchange for viewing the advertisements of vendor affiliates of the present system. The user may then spend previously accumulated points, or virtual currency, in order to access desirable content of redeemer affiliates of the present system. The present system further facilitates financial transactions between the system operator, vendor affiliates, and redeemer affiliates, relative to the movement of virtual currency amongst the various parties.

Abstract: An electronic advertising system anonymously directs the attention of a user to content provided by an advertiser, in exchange for subsequently permitting the same user to access otherwise restricted desirable content of another part. Such desirable content may include online entertainment media, digital video content, social media, news media, and other privileged services or data. The user accumulates points, or virtual currency, in exchange for viewing the advertisements of vendor affiliates of the present system. The user may then spend previously accumulated points, or virtual currency, in order to access desirable content of redeemer affiliates of the present system. The present system further facilitates financial transactions between the system operator, vendor affiliates, and redeemer affiliates, relative to the movement of virtual currency amongst the various parties.