Higher-order-mode assisted silicon-on-insulator 90 degree polarization rotator
2009; Optica Publishing Group; Volume: 17; Issue: 23 Linguagem: Inglês
10.1364/oe.17.020694
ISSN1094-4087
AutoresYang Yue, Lin Zhang, Muping Song, Raymond G. Beausoleil, Alan E. Willner,
Tópico(s)Advanced Fiber Optic Sensors
ResumoWe propose and analyze a 90 degrees polarization rotator based on wave coupling through an intermediate, multimode, axially uniform waveguide. The coupling efficiency of the x- and y-polarized fundamental modes between the horizontal and vertical rectangular waveguides is remarkably enhanced with the help of the TE(01) mode in the multimode waveguide. The polarization rotator has a very short (21-microm) conversion length with a 17.22 dB extinction ratio. It also exhibits a 68-nm bandwidth for polarization conversion efficiency above 90%.
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