Reducing energy consumption is a key concern in video data centers, in which disk arrays consume a significant portion of the total energy. Disks typically support multiple power modes including a low-power mode in which they use considerably less energy than in any other mode. Therefore, extending the length of time that disks stay in low-power mode is important for energy conservation. We pro...

In this work, we propose and demonstrate numerically a long-period grating (LPG) based technique to couple light from single-mode fiber (SMF) all cores of multi-core (MCF), i.e., an SMF MCF coupler. The launched into the core is coupled cladding due LPG inscribed in core. Then, optical power transferred between fibers claddings, enhanced by reduction radius. Finally, distributed identical LPGs ...

We show that optically induced long-period grating (OLPG) is a particular case of inter-modal Bragg-scattering four-wave mixing (BS-FWM). To carry out such analysis, vector model for the BS-FWM was proposed and further tailored to investigate energy transfer by OLPGs. Both processes, OLPGs, have been in-line all-optical mode switching in transmission systems with space-division multiplexing (SD...