Study of polarization-dependent coupling in optical waveguide directional couplers by the effective-index method with built-in perturbation correction
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 1018-1026 |
Journal / Publication | Journal of Lightwave Technology |
Volume | 20 |
Issue number | 6 |
Publication status | Published - Jun 2002 |
Link(s)
Abstract
Polarization dependence is a major factor of consideration in the design of optical waveguide devices for application in optical fiber transmission systems. In this paper, we apply the recently proposed effective-index method with built-in perturbation correction to the study of the polarization dependence in the coupling coefficient of a directional coupler that consists of two parallel rectangular-core waveguides. Numerical results are found to agree with those calculated by the vector version of the Marcatili method with perturbation correction. With numerical illustrations, we show that the polarization dependence in the splitting ratio of a directional coupler can be eliminated by a proper choice of the physical parameters of the coupler. Our results provide useful guidelines for the design of polarization-insensitive integrated-optic directional couplers.
Research Area(s)
- Couplers, Integrated optics, Optical waveguides, Polarization
Citation Format(s)
Study of polarization-dependent coupling in optical waveguide directional couplers by the effective-index method with built-in perturbation correction. / Kwan, Chung Ho; Chiang, Kin Seng.
In: Journal of Lightwave Technology, Vol. 20, No. 6, 06.2002, p. 1018-1026.
In: Journal of Lightwave Technology, Vol. 20, No. 6, 06.2002, p. 1018-1026.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review