Substrate-strain-induced tunability of dense wavelength-division multiplexing thin-film filters

Rémy Parmentier, Michel Lequime
2003 Optics Letters  
Classic dense wavelength-division multiplexing thin-film filters can be spectrally tuned through the substrate's strain. We analyze the theoretical shift of the design wavelength of a narrow-bandpass filter when uniform, uniaxial compressive stress is applied to the substrate, and we compare calculated sensitivity with experimental data. We measure the transmittance shape of a 200-GHz standard filter for several loading cases to quantify the increase of insertion losses.
doi:10.1364/ol.28.000728 pmid:12747721 fatcat:r27yzmmva5d5fapdtw6m24gz6y