PREPARATION OF PLASTIC OPTICAL FIBERS FOR NEAR-IR REGION TRANSMISSION

Loss factors for PMMA and PS core plastic optical fibers (POFs) were analyzed, and it was revealed that the vibrational absorption owing to CH vibration plays the most significant role in reducing the near-IR region attenuation loss. Conversion of the hydrogen of the CH bond in the core polymer to deuterium gives rise to a large reduction of the attenuation loss not only in the visible wavelength region but also in the near-IR region.