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Proceedings Paper

Design of wavelength-selective directional coupler made of W-index waveguide for WDM
Author(s): Jung Hyun Yun; Kyoung Tae Ra; PhilJung Kim; Sang-Duk Kim; JaeGyu Lee; JongBin Kim
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Paper Abstract

An optical waveguides spectral filter constructed with a W- index waveguide, supporting a dominant mode with nonzero cutoff frequency, and a Step-index waveguide is proposed an analyzed. The proposed filter offers a spectral width on the order of one nanometer, considerably narrower than that provided by a filter made of two Step-index waveguides having the same transmission wavelength. T he narrow spectral width is achieved by exploiting a relatively large slope difference between the dispersion characteristics of the W-index and Step-index waveguides constituting a filter. For an example case, transmission characteristic of the proposed filter with peak transmission at 1.55 (mu) m is calculated and compared with that of a corresponding filter made of two Step-index waveguides.

Paper Details

Date Published: 11 July 2000
PDF: 8 pages
Proc. SPIE 4078, Optoelectronic Materials and Devices II, (11 July 2000); doi: 10.1117/12.392165
Show Author Affiliations
Jung Hyun Yun, Chosun Univ. (South Korea)
Kyoung Tae Ra, Chosun Univ. (South Korea)
PhilJung Kim, Chosun Univ. (South Korea)
Sang-Duk Kim, DongA-InJae College (South Korea)
JaeGyu Lee, Chosun Univ. (South Korea)
JongBin Kim, Chosun Univ. (South Korea)


Published in SPIE Proceedings Vol. 4078:
Optoelectronic Materials and Devices II
Yan-Kuin Su; Pallab Bhattacharya, Editor(s)

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