Spatially Modulated Bragg Gratings |
| I. Procházka, L. Kotac̆ka Institute of Physical Engineering, Faculty of Mechanical Engineering, Technical University Brno, Technická 2, 616 69 Brno, Czech Republic and F. Petrás̆ Department of Optics, Faculty of Science, Palacký University, tř. 17. listopadu 50, 772 07 Olomouc, Czech Republic |
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| A set of coupled mode differential equations which describe the light propagation in an optical fiber containing a photoinduced Bragg grating is derived. Reflection spectra based on numerical solution to these equations are presented when basic grating parameters are varied. In addition, the influence of these parameters on the maximum reflectivity and 3 dB bandwidth is examined. Finally, reflection spectra of the chirped grating and the grating with spatially modulated refractive index changes are discussed. |
| DOI: 10.12693/APhysPolA.95.821 PACS numbers: 42.70.Dj |