Apparatus, method, logic arrangement and storage medium are provided for increasing the sensitivity in the detection of optical coherence tomography and low coherence interferometry signals by detecting a parallel set of spectral bands, each band being a unique combination of optical frequencies. The reducing agent feed opens into the exhaust pipe upstream of the filter element, while the catalytic converter is disposed downstream of the filter element, as seen in exhaust gas flow direction. A stud is joined to an outer face of each plate. The first and the second multilayer substrates are then laminated having the bonded surfaces facing each other while having the three-layered sheet positioned and interposed therebetween, and batch thermocompression bonded. In one aspect of the invention, the writing instrument may be used to perform moves or tricks as a novelty device to provide entertainment and enjoyment to a user.