A first substrate may be joined to a second substrate using an adhesive body. The storage device includes a bladder that contains the hydrogen fuel source and conforms to the volume of the hydrogen fuel source. Thus, the cell phone is provided with a laser generator which emits a laser beam outwardly to provide a laser lighting effect, so that the cell phone has an indicating function available for speech or teach and has a lighting function available for a dark site, thereby enhancing the versatility of the cell phone. Peripheral functions are generated for connections between blocks in the first subset and blocks in a second subset, which are designated for a hardware implementation on the PLD. Advantageously, the novel coupler array may be fabricated as an array of individually drawn couplers from multiple parallel fused performs.