A particle detector is provided that comprises an optically active element (10a), a particle to charge-carrier conversion element (21a), a charge carrier multiplier (22a) and an optical waveguide (30). The particle to charge-carrier conversion element (21a) is configured to generate at least one charge carrier upon absorbing a particle (³) and the charge carrier multiplier (22a) is configured to generate a charge carrier cloud (23a) with a plurality of charge carriers within the optically active element (10a), the optically active element (10a) having an optically detectable property dependent on the presence of charge carriers generated by the charge carrier multiplier (22a). The optically active element is optically coupled to the waveguide (30), therewith allowing the optically active element to receive an optic interrogation signal from an external source (40) and to allow an external recipient to receive an optic response signal from said optically active element, which optic response signal is modified in accordance with said changed optically detectable property.
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