A four-layer film for packaging, including blister packaging, is described. The system achieves such reduction in the fiber dispersion limit by employing a multi-wavelength optical signal comprising a gap-free band structure, and performing per-band dispersion compensation on the optical signal by adjusting residual dispersion values associated with one or more of the bands. The receptacle has a suspension member with a first end portion securable to the swivel member and a second end portion securable to a support member so that when the assembled receptacle is suspended from the support member, the lid can rotate relative to the swivel member without being detached from the housing.