An adhesivity improving layer 2, and a flame-retardant heat-adhesive resin layer 3 comprising from 80 to 60 wt. The header includes a table identification extension field which serves to establish uniqueness of the ETT, and the message body includes an extended text message. The laminated substrates are irradiated with a laser along the groove from the side of the glass substrate. The information is then used to determine a communication priority as between the first and second PCD with respect to at least one communication mode. An operative attitude is one in which the deflector plate sets are in upright positions in which they extend above the chute discharge edge to channel material exiting the chute into a material acceptance region defined to the interior of the deployed deflector plates. A method for producing an optical device including at least one first substrate defining a multiplicity of optical fiber positioning grooves is also disclosed.