Abstract
Arrayed Waveguide Grating (AWG) devices were initially proposed as optical multiplexing routers for communication networks. With the benefit of compact Planar Lightwave Circuit (PLC) technology, researchers adapted the AWG format so that it could be used in absorption spectroscopy [1]. Here, we have developed a compact AWG sensor to perform fluorescence spectroscopy, the most commonly used technique in biochemical analysis and medical diagnosis [2]. These measurements impose greater challenges on the optical requirements of the AWG, not least of which is efficient rejection of the excitation light. Figure 1 shows the realisation of these devices and the experimental output spectra of different channels.
© 2011 Optical Society of America
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