The present invention includes a monofilament obtainable by extruding a composition comprising: at least one vinylidene chloride polymermethyl acrylate interpolymer having at most about 6 weight percent methyl acrylate mer units in the polymer; and at least about three weight percent total plasticizer, of which about 0. An amorphous hard carbon film is formed on the outer peripheral surface of the slide pipe. The device may further include a security module for selectively purging data from the shared memory. Typically, the PLC waveguide wafer includes a waveguide core region bound by upper and lower cladding layers.