Comparison between different roughness shapes based on channel waveguide

Mohd Syuhaimi Ab Rahman, F. Ater, M. Hassan, R. Mohammad, I. Shyan Hwang

Research output: Contribution to journalArticle

Abstract

The present paper compares the effect of different roughness shapes on optical channel waveguides in terms of output power, insertion loss and attenuation coefficient. The analysis based simulation was performed using OptiBPM software which is adapted to simulate the performance of these waveguide structures. Varying-depths of roughness, rd ranging from 0 to 0.5μm and waveguide width variations from w = 2μm, 4μm, and w = 6μm are considered and numerical results are obtained for channel waveguide propagation losses due to roughness induced scattering. The results indicate that scattering loss increases as SWR depth increases, which leads to reduce the output power significantly especially for narrow waveguide (w < 4μm) and high roughness depth (rd > 0.2μm). Accordingly, attenuation coefficient and insertion loss increases due to the corresponding reduction in output power. The propagation loss of the waveguide increases dramatically upon increasing the SWR of the channel. It can be concluded, that the sensitivity of propagation loss is more severely affected by the small waveguide width i.e. w < 4μm and less by the large ones i.e. w > 4μm. Finally it has been shown according to our typical values, it seems that sinusoidal-like SWR and triangular is more affected compared to random one due to the periodicity nature of shape which affects the overall phase interference. Further study should attempt to reduce the roughness of waveguide to lower the scattering loss.

Original languageEnglish
Pages (from-to)1577-1581
Number of pages5
JournalJournal of Optoelectronics and Advanced Materials
Volume17
Issue number9-10
Publication statusPublished - 1 Sep 2015

Fingerprint

Waveguides
roughness
Surface roughness
waveguides
attenuation coefficients
Scattering
Insertion losses
insertion loss
propagation
output
scattering
periodic variations
computer programs
interference
sensitivity
coefficients
simulation

Keywords

  • Channel waveguide
  • Insertion losses
  • Output power
  • Roughness shapes
  • Scattering loss
  • Sidewall roughness

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Comparison between different roughness shapes based on channel waveguide. / Ab Rahman, Mohd Syuhaimi; Ater, F.; Hassan, M.; Mohammad, R.; Hwang, I. Shyan.

In: Journal of Optoelectronics and Advanced Materials, Vol. 17, No. 9-10, 01.09.2015, p. 1577-1581.

Research output: Contribution to journalArticle

Ab Rahman, MS, Ater, F, Hassan, M, Mohammad, R & Hwang, IS 2015, 'Comparison between different roughness shapes based on channel waveguide', Journal of Optoelectronics and Advanced Materials, vol. 17, no. 9-10, pp. 1577-1581.
Ab Rahman, Mohd Syuhaimi ; Ater, F. ; Hassan, M. ; Mohammad, R. ; Hwang, I. Shyan. / Comparison between different roughness shapes based on channel waveguide. In: Journal of Optoelectronics and Advanced Materials. 2015 ; Vol. 17, No. 9-10. pp. 1577-1581.
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