# Loss calculations in weakly-guiding optical dielectric waveguides

Adams, M.J.
(1977)
Loss calculations in weakly-guiding optical dielectric waveguides.
*Optics Communications*, 23, (1), 105-108. (doi:10.1016/0030-4018(77)90136-5).

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## Description/Abstract

The application of perturbation theory to a three-layer weakly-guiding slab waveguide composed of lossy dielectric media yields a simple formula for the attenuation coefficient alpha of a guided mode: alpha = (Sigma^3(i=1) alpha(i) P(i)) / (Sigma^3(i=1) P(i)), where alpha(i), P(i) are respectively the loss coefficient and model power in region i (i = 1,2,3). It is shown that this result can also be obtained from arguments based purely on geometric optics. The result is easily extended to apply to circularly-symmetric optical fibres where it yields confirmation of an earlier approximation for the power ratios P(i)/Sigma^2(i=1)P(i)

Item Type: | Article |
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ISSNs: | 0030-4018 (print) |

Related URLs: | |

Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics |

Divisions: | University Structure - Pre August 2011 > Optoelectronics Research Centre |

ePrint ID: | 78725 |

Date Deposited: | 11 Mar 2010 |

Last Modified: | 27 Mar 2014 18:59 |

URI: | http://eprints.soton.ac.uk/id/eprint/78725 |

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