Effects of random sidewall roughness on optical power splitter

Mohd Syuhaimi Ab Rahman, Foze Saleh Ater, Rahmah Mohamed

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The effect of optical waveguide sidewall roughness (SWR) on the performance of a 1 × 2 optical power splitter (OPS) using OptiBPM software for the first time is analyzed. A simulation model is presented to predict the relationship between the SWR and output optical power of OPS for different relatively wide ranges of waveguide width. In particular, different values of waveguide widths, i.e., from w . 1 to 6 μm, and an average roughness depth p from 0 to 0.5 μm are considered. In addition, the corresponding insertion loss and uniformity are determined. The results show that output power decreases significantly as the SWR increases due to the increase of the scattering loss, especially for p ≥ 0.3 μm and narrow waveguides (i.e., w ≤ 3 μm) compared with relatively wider ones (i.e., w 3 μm). SWR can greatly increase the scattering loss leading to significant output power loss, which leads to an increase in insertion loss and uniformity. The conclusion drawn from the presented results provide guidelines for evaluation device performance before real fabrication.

Original languageEnglish
Article number055103
JournalOptical Engineering
Volume54
Issue number5
DOIs
Publication statusPublished - 1 May 2015

Fingerprint

roughness
Surface roughness
Waveguides
Insertion losses
waveguides
insertion loss
output
Scattering
power loss
Optical waveguides
scattering
optical waveguides
computer programs
Fabrication
fabrication
evaluation
simulation

Keywords

  • optical power splitter
  • output power ratio
  • scattering loss
  • sidewall roughness
  • simulation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

Cite this

Effects of random sidewall roughness on optical power splitter. / Ab Rahman, Mohd Syuhaimi; Ater, Foze Saleh; Mohamed, Rahmah.

In: Optical Engineering, Vol. 54, No. 5, 055103, 01.05.2015.

Research output: Contribution to journalArticle

Ab Rahman, Mohd Syuhaimi ; Ater, Foze Saleh ; Mohamed, Rahmah. / Effects of random sidewall roughness on optical power splitter. In: Optical Engineering. 2015 ; Vol. 54, No. 5.
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