An MPEG decoding device is designed to decode multiple packetized elementary streams representing video signals andor audio signals, which are bit streams compressed by the MPEG system in satellite digital broadcasting, for example. The handle is a hollow tubular body with the grip rope passed through the handle; the grip rope has first and second ends with first and second openings respectively; the fixing device includes a retaining ring and a fastening element, and the fastening element has a hollow sleeve passed into the first and second openings and operated with the retaining ring to fix the grip rope. The lithium secondary battery is used in an electric vehicle as combined batteries formed by connecting a required number of the single batteries in series. The waveguide region is arranged between a first cladding layer and a second cladding layer.