In an optical fiber, a plurality of individual cores extend through a common cladding. In a Flex operating environment, a certificate store is maintained that is accessible to a Java operating environment. A safety wire is disposed through the lumen and fixed with respect to each of the first and second end portions. The thermal policy manager module may also adjust operation of an active cooling device if the temperature value sensed by a sensor within the PCD reaches a predetermined value. An isolation material is then used to fill the shallow trench and the buffer film layer is stripped to form an isolation structure.