Interleaving improves noise rejection in digital communication and storage systems. In one embodiment, the adapter includes: a fiber socket having cantilevered retaining arms, a shell radially surrounding the fiber socket and a release mechanism extending from without the shell to within the shell, coupled to the cantilevered retaining arms and configured to translate to change a separation of the cantilevered retaining arms. The laser beam detection optics receives the laser beam directed in the direction of the photosensitive body at a predetermined location relative to the start position on the photosensitive body, redirects the received laser beam towards a sensor, and focuses the laser beam on the sensing area of the sensor. The number of etching masks can be reduced in manufacturing a semiconductor device having capacitors, fuses and MOS field effect transistors so that the number of processes can be reduced and it becomes easy to improve the productivity and reduce the manufacture cost. The device is inexpensive, lightweight and easily installed, replaced and retrofitted.