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Matching of a Bent Step‐Index Single‐Mode Fiber by a Modal Equivalent Slab Waveguide Structure
Author(s) -
Haubenreisser W.,
Ecke W.,
Schröter S.,
Schwotzer G.,
Willsch R.
Publication year - 1994
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221860126
Subject(s) - bent molecular geometry , modal , slab , optics , birefringence , waveguide , modal analysis , fiber , aperture (computer memory) , mode (computer interface) , single mode optical fiber , wavelength , anisotropy , materials science , physics , optical fiber , structural engineering , acoustics , computer science , engineering , composite material , vibration , polymer chemistry , operating system
A novel procedure of matching the modal properties of a bent step‐index single‐mode fiber (BSSF) by the ones of an equivalent slab waveguide (ESW) structure is presented. On applying this procedure the actual BSSF structure is modelled in the first step by an equivalent straight anisotropic single‐mode fiber (SASF) and in the second step this SASF structure is modally matched by an ESW structure. It is shown that for given BSSF (or SASF) input parameters only the derived ESW parameters can describe the modal features (birefringence, cut‐off thickness and wavelength, single‐mode operation range as well as the numerical aperture) of an actual BSSF structure rigorously and consistently within the framework of a slab model analysis.