Optical Transparency of Fluorinated Polyimides at Near-IR Wavelengths

Optical Transparency of Fluorinated Polyimides at Near-IR Wavelengths 

Since the absorption band strength decreases about one order of magnitude with each increase in the order of harmonics (i.e., the vibrational quantum 

Since the absorption band strength decreases about one order of magnitude with each increase in the order of harmonics (i.e., the vibrational quantum number), the losses at visible and near-IR wavelengths can be appreciably reduced by substituting deuterium or fluorine for hydrogen atoms. Kaino etal have produced low-loss optical fibers at visible wavelengths from deuterated 

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