OPTICAL INFORMATION TRANSMITTER

PURPOSE:To transmit a signal without attenuation by transmitting sensing data on plural planes of polarization of an optical fiber, and arranging the optical fiber or optical connector whose core part is made of a liquid material or a sol or gel material at a part where the optical fiber is so wired that its curvature becomes small. CONSTITUTION:Information is transmitted with a light signal through the fiber 20 for optical transmission. The light signal is transmitted on a specific plane of polarization; and the fiber 20 for optical transmission is an optical waveguide type and a liquid material or sol or gel material which has a larger refractive index than the peripheral clad part 20b and transmits light in a desired band is charged in the core part 20a. Further, the optical connector part formed by enlosing a liquid material or sol or gel material which has a larger refractive index than the peripheral clad part and transmits the light in the desired band in the core part is provided at least the bent part of the fiber for optical transmission.