An analysis is presented which indicates that the thermal stresses in optical waveguide fibers can be large enough to affect their refractive index profiles. In fibers made by the inside vapor phase oxidation (IVPO) process, the resultant distortions are large enough to affect the numerical aperture (NA) of the fiber, as well as the bandwidth. This complicates the problem of predicting optimal dopant profiles for high bandwidth, as the refractive index measurements, upon which such predictions are based, are usually made on unstressed glasses. Even the predicted numerical aperture may be in error by similar 4%.
|Original language||English (US)|
|Pages||10. 5. 1-10. 5. 3|
|State||Published - 1978|
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