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Polarization-independent long-wavelength cut off filter with symmetrical film system



  1. School of Photo-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China


In this paper, a new kind of symmetrical film structure (LHL) was proposed to design polarization-independent long-wavelength cutoff filter for optical-fiber communication system. The system consists of films without thinner films (<30nm) which is suitable for accurately monitoring with the indirect monochromatic optical monitor technique. The prepared filter achieved excellent optical propagation characteristic corresponds to the theoretical spectral performance. The experimental result demonstrates that it realizes zero separation of p- and s-polarization and possesses high and smooth transmission curve in the transmission region. Moreover, polarization-independent filters at different incident angles can be achieved just according to adjusting the value of ..


Thin films, Multilayer design, Depolarization, Long-wavelength cut off filter.

Submitted at: Dec. 26, 2016
Accepted at: June 7, 2017


SHIFU XIONG, XIUHUA FU, YUSHUAI ZHANG, JING ZHANG, Polarization-independent long-wavelength cut off filter with symmetrical film system, Journal of Optoelectronics and Advanced Materials Vol. 19, Iss. 5-6, pp. 331-335 (2017)