Optimal design of single resonant and ultrabroadband long-period fiber grating filters

Cheng-Ling Lee; Pin Han

doi:10.1117/1.3194285

1 August 2009 Optimal design of single resonant and ultrabroadband long-period fiber grating filters

Cheng-Ling Lee, Pin Han

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Optical Engineering, Vol. 48, Issue 8, 080501 (August 2009). https://doi.org/10.1117/1.3194285

Abstract

We propose a spectral flat-top, single resonant, and ultrabroadband-more than 180 nm in a -20-dB bandwidth-long-period fiber grating (LPG) filter. The ultrabroadband LPG is based on a thin cladding layer LPG synthesized by the Lagrange multiplier optimization (LMO) algorithm. As the bandwidth and resonant spectra cover a very wide band, both material dispersion and waveguide dispersion were included in the calculations of the LMO method. To the best of our knowledge, the bandwidth of the designed flat-top LPG filter in the -20-dB coupling is the broadest currently existing in the literature. Such designed LPG devices can be very useful for a variety of applications in broadband optical communication systems.

©(2009) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Cheng-Ling Lee and Pin Han "Optimal design of single resonant and ultrabroadband long-period fiber grating filters," Optical Engineering 48(8), 080501 (1 August 2009). https://doi.org/10.1117/1.3194285

Published: 1 August 2009

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