KRS-5 optical fibers capable of transmitting high-power CO(2) laser beam

Infrared image guide with bundled As-S glass fibers

An infrared image guide made of bundled As-S glass fiber cores has been developed. The transmission range of this fiber was 2-6 microm. At the 3.3- and 4.8-microm wavelengths the minimum optical loss was 0.6 dB/m. With this image guide efficient transmission of the thermal image was experimentally established.

Temperature dependence of the Faraday effect in As-S glass fiber

Temperature dependence of the Faraday effect is investigated for As2S3 fiber at 3.39 microm, obtaining a Verdet constant V of 1.62 x 10(-2) min/cm x G at room temperature and a temperature-dependence term coefficient of 10.67 min x K/cm x G in the experiments. The V value obtained at 25 degrees C is consistent with the theoretical estimates based on the first derivative of known refractive indices with respect to the wavelength. The temperature-dependent term is also discussed theoretically.

Dispersive properties of a flexible KRS-5 fiber on magneto-optical effects at individual CO(2) laser lines

A flexible midinfrared fiber is investigated with respect to its magneto-optical properties, such as the Faraday effect, the Voigt effect, and the extinction coefficient, at individual vibrational-rotational transitions of a CO(2) 10.6 microm laser. It is seen that dispersive properties exist over the wavelengths above, typically showing a Verdet constant of 5 x 10(-4) deg/Oe cm, a natural retardation of 0.018 deg/cm, and an extinction coefficient of 2.0 x 10(-3)cm(-1)on the average.