TY - CHAP A1 - Meister, Stefan A1 - Schweda, Dawid A1 - Dziedzina, Marcus A1 - Al-Saadi, Aws A1 - Franke, Bülent A. A1 - Scharfenorth, Chris A1 - Grimm, Bernd A1 - Dufft, Daniela A1 - Schrader, Sigurd A1 - Eichler, Hans J. T1 - Single cavity filters on end-faces of optical fibers N2 - We have developed thin film Fabry-Perot filters directly coated on optical fibers to archive a high level of integration with a reduction of optical elements. Such band-pass filters can be used in fiber optical sensor systems, and for fiber communication, e.g. CWDM applications. The filters cavities consist of a single spacer and two dielectric mirrors. The dielectric mirrors are deposited by PVD directly on end-faces of single-mode optical fibers. Dielectric as well as polymeric materials were applied as the spacer layer. Polymeric spacer layers were deposited by dip coating. The influence of the mirror reflectivity on the transmission band of the Fabry-Perot filters was investigated. Furthermore, the optical performance of filters with first order (λ/2) as well as higher order spacers was analyzed. The experimental results are compared with numerical analysis of Fabry-Perot cavities on the end-face of cylindrical waveguides. The spectral characteristic of the filters are calculated using a software solving Maxwell´s equations by a FDTD method. The layer design of the filters and the deposition process were optimized for maximum transmission and narrow bandwidth of the transmission peak. Passive band-pass filters on fiber end-faces were designed, fabricated and characterized for transmission wavelengths of 945 nm, 1300 nm, as well as 1550 nm. Bandwidths as narrow as 1 nm could be achieved for 945 nm. KW - fiber optics KW - microcavity KW - optical coating KW - band-pass filter KW - Fabry-Perot filter KW - dip coating Y1 - 2010 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:526-opus4-15214 SP - 253 EP - 261 PB - Society of Photo-Optical Instrumentation Engineers (SPIE) ER -