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http://dx.doi.org/10.3807/HKH.2007.18.6.447

Design and Analysis of Mach-Zehnder-Interferometer-Based Silica Planar Lightwave Circuit Triplexer  

Lee, Tae-Hyung (Department of Electronics and Communications Engineering, Kwangwoon University)
Lee, Dong-Hyun (Department of Electronics and Communications Engineering, Kwangwoon University)
Chung, Young-Chul (Department of Electronics and Communications Engineering, Kwangwoon University)
Publication Information
Korean Journal of Optics and Photonics / v.18, no.6, 2007 , pp. 447-451 More about this Journal
Abstract
A triplexer based on a silica planar lightwave circuit Mach-Zehnder nterferometer(MZI) is proposed and its characteristics are analyzed through simulations. To separate 1310 nm band and $1480{\sim}1560nm$ band properly, the path length difference of an MZI is set to be the multiple and half of the wavelength 1310 nm and the balance of the directional coupler is optimized in the $1480{\sim}1560nm$ band. The same MZI is additionally cascaded to provide good crosstalk characteristics. The 1490 nm band and 1550 nm band are further separated using additional two stage MZI's. A three-dimensional BPM and transfer matrix method analysis predicts the low crosstalk characteristics and the fabrication-error-tolerance of the proposed triplexer.
Keywords
Planar waveguides; Silica; Integrated optics; Optical filters;
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