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Proceedings Paper

Improvement of extinction ratios of polarization independent very short vertical directional couplers
Author(s): Byung-Min Jung; Boo-Gyoun Kim
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Paper Abstract

We show that the extinction ratio is improved using slight asymmetry in two core refractive indices of polarization independent very short vertical directional couplers with the double-sided deep-ridge waveguide structure. The optimum asymmetry with the maximum extinction ratio increases as the thicknesses of the inner cladding layer and the two core layers decrease. Also, the device length and the tolerance of the device length with the extinction ratio more than 30 dB decrease as the thicknesses of the inner cladding layer and the two core layers decrease.

Paper Details

Date Published: 4 October 2006
PDF: 7 pages
Proc. SPIE 6351, Passive Components and Fiber-based Devices III, 63513V (4 October 2006); doi: 10.1117/12.688848
Show Author Affiliations
Byung-Min Jung, Soongsil Univ. (South Korea)
Boo-Gyoun Kim, Soongsil Univ. (South Korea)


Published in SPIE Proceedings Vol. 6351:
Passive Components and Fiber-based Devices III
Sang Bae Lee; Yan Sun; Kun Qiu; Simon C. Fleming; Ian H. White, Editor(s)

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