We introduced a novel optoelectronic nose (digital photonic nose) which utilizes an array of infrared transmitting hollow core photonic band gap fibers for detection of several volatiles. The fibers in the array have distinct transmission bands depending on their photonic crystal structures. Transmission band of half of the fibers were selected to roughly cover the major absorption peaks of volatile organics. Transmission bands of the other fibers were selected in the fingerprint region where all molecules have various special absorption peaks. This cross-responsive sensor array enables detection and discrimination of large numbers of volatiles by mimicking the mammalian olfactory system.