| 摘要 |
PURPOSE:To attain the transmission of many information amount by providing plural means controlling an angle of a polarized plane of a light signal lighted from a light transmitter and applying modulation multiplex a light signal to plural polarized plane angle. CONSTITUTION:The length of a substance 18 constituting polarized plane control sections 10, 11 is taken respectively as L. The rotary angle theta of the polarized plane is proportional to a product between the strength H of the magnetic field and the distance L of the substance 18 acting on mutually. Thus, the polarized plane is controlled by the strength H of the magnetic field and the distance L of the substance 18. Thus, a light signal outputted from light transmitters 8, 9 is formed into a light signal 2 as shown in Figs. A, B by the polarized plane control sections 10, 11. The light signal 2 is synthesized by a light synthesizer 12 and the result is transmitted through an optical cable. The polarizing plates 14, 15 transmits only the light signal 2 having a required polarized plane from the light signals 2 incident from a spectroscope 13. |
