Abstract
The present study reports the simulation results on the reflectance of the uniform polymer Bragg gratings in the visible spectral range for fabrication by direct writing using femtosecond laser. The simulations are based on the coupled-mode theory. Simulations studies have been carried out for a Bragg grating with a grating period of 190 nm and a reflection up to 99.9% with varying bandwidth and grating length. The reflectivities increase rapidly with increasing grating length or/and refractive index modulation in the optical waveguide. However, this also leads to an increase in the side lobes strength and the reflectance bandwidth. For the BG of grating length 1 mm used for tuning purposes along with other gain medium, a reflectance of ~46% for a bandwidth of 1.1809 × 10−10 m is found to be suitable for integrated photonics applications. Potential applications of this study are in field of optofluidic lasers, sensor technology and bio photonics.
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Sanyogita, Das, U., Panigrahi, P.K. (2017). Simulations Studies for Femtosecond Laser Inscribed Bragg Grating Structures on Polymer. In: Bhattacharya, I., Chakrabarti, S., Reehal, H., Lakshminarayanan, V. (eds) Advances in Optical Science and Engineering. Springer Proceedings in Physics, vol 194. Springer, Singapore. https://doi.org/10.1007/978-981-10-3908-9_81
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DOI: https://doi.org/10.1007/978-981-10-3908-9_81
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