Abstract: A material band riveting device includes a feeding structure, a riveting structure and a material pulling structure. The riveting structure is disposed to one end of the feeding structure. The riveting structure has a riveting mold, a plurality of locating pins, two first riveting pins, two second riveting pins and two pressing blocks. The plurality of the locating pins are partially disposed in the riveting mold. The two first riveting pins are partially disposed in the riveting mold. Each first riveting pin has a first riveting portion. The two second riveting pins are partially disposed in the riveting mold. Each second riveting pin has a second riveting portion. The material pulling structure is disposed under the feeding structure.

Abstract: The present invention discloses a modulation device for generating an optical signal with quadruple frequency and the modulation method thereof. The modulation device in the present invention utilizes a commercial integrated modulator, a RF signal generator and a phase shifter to generate an optical signal with quadruple frequency. When the RF signal generator generates a first modulation signal, and the phase shifter shifts the first modulation signal by 90 degrees to generate a second modulation signal, the integrated modulator is biased to transmit the optical signal in maximum value and to modulate the first and second modulation signal so as to generate a output optical signal with quadruple frequency.