Heavy metal-oxide glass optical fibers for use in laser medical

Details Heavy metal-oxide glass optical fibers for use in laser medical Heavy metal-oxide glass optical fibers for use in laser medical

1992-07-06

1993-12-28

Gonzalez, Frank

Optical waveguides

Having particular optical characteristic modifying chemical...

Of waveguide core

385141, 501 37, 501 41, G02B 600

Patent

active

052747280

ABSTRACT:
An improved optical fiber for transmitting mid-infrared wavelength laser light in surgical instruments, includes, a heavy-metal oxide component, preferably GeO.sub.2 doped with heavier cations and anions, is capable of delivering of at least three watts of laser power continuously for more than ten minutes, without failure. This glass fiber has an .alpha.(dB/m) at 2.94.mu.m of 10, preferably less, and can transmit at least 27% of the IR through a thickness of one foot.

REFERENCES:
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patent: 5164945 (1992-11-01), Long et al.
Scientific American, "Infrared Optical Fibers" pp. 110-116, Nov. 1988.
S. May. "Expanding Laser Applications Foster Technological Evolution", Photonics Spectra, Nov. 1991.
L. Esterowitz, et al. "Angioplasty With a Laser and Fiber Optics . . . ", vol. 622 SPIE, Jan. 1986.
H. Takahashi, et al. "Decreased Losses in Germanium-Oxide Glass Optical Fiber . . . ". Japanese Journal of Applied Physics. vol. 22, No. 3, Mar. 1983 pp. L139-L140.
M. D. Rigterink. "Material Systems, Fabrication and Characteristics . . . Waveguides". Ceramic Bulletin, vol. 55, No. 9 (1976), pp. 775-780.

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