Advances in the development of liquid-core waveguides for IR applications

Joerg Meister; Roland Jung; Stefan Diemer; Michael Haisch; Werner Fuss; Peter Hering

doi:10.1117/12.237559

5 April 1996 Advances in the development of liquid-core waveguides for IR applications

Joerg Meister, Roland Jung, Stefan Diemer, Michael Haisch, Werner Fuss, Peter Hering

Author Affiliations +

Proceedings Volume 2677, Biomedical Fiber Optics; (1996) https://doi.org/10.1117/12.237559
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

With the development of infrared transmitting fibers, medical applications such as minimally invasive surgery are becoming feasible. In particular we investigate liquid core waveguides with an Er:YAG laser at 2.94 micrometer. Because of their advantages like variability in diameter, high flexibility, and mechanical stability, liquid core waveguides appear to be an alternative to conventional IR waveguides. In this work we present two types of liquid CCl₄ filled lightguides that have been developed with plastic tube and quartz capillary as cladding. The former with an inner diameter of 1.6 mm showed an attenuation of 2.6 dB/m at 2.94 micrometer. For the quartz glass capillary with an inner diameter of 550 micrometers an attenuation of approximately 4.8 dB/m was determined in first experimental results. Due to the great flexibility and the high mechanical stability of both lightguides, bending radii below 10 mm are possible. Transmission losses depending on bending radii are discussed. A comparison between measurements with an IR-spectrometer and an Er:YAG laser shows that a minimum transmission loss of 2 dB/m can be achieved.

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Joerg Meister, Roland Jung, Stefan Diemer, Michael Haisch, Werner Fuss, and Peter Hering "Advances in the development of liquid-core waveguides for IR applications", Proc. SPIE 2677, Biomedical Fiber Optics, (5 April 1996); https://doi.org/10.1117/12.237559

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