Enhancing the performance of strip and 180-deg slot waveguide bends for integrated optical waveguide modulator

Musab A.M. Al-Tarawni, Ahmad Ashrif A Bakar, Md Zain Ahmad Rifqi, Mou'ad A. Tarawneh, Sahrim Ahmad

Research output: Contribution to journalArticle

Abstract

Waveguide bends are essential structures for designing an integrated optical waveguide modulator (IOWM). However, reducing bending loss for strip and slot waveguide bends and obtaining a small increment of footprint size by bending the radius are challenging issues. We aim to evaluate whether using strip waveguides with an adiabatic bend reduces the bending loss and to obtain a specific length suitable for a V-shaped mode converter with a small increment of footprint size in the IOWM. Furthermore, a new 180-deg-bend structure for slot waveguides, to reduce bending loss, is investigated. The results of reducing bending radius (R) with a large coverage angle (α c ) for strip waveguide bends revealed a low bending loss and simultaneously a reduction of the footprint size in the IOWM. For the 180-deg slot waveguide bend, both the bending and coupling losses were reduced by optimizing the taper and distance offset, which enhanced transmission power efficiency. We validated the feasibility and efficiency of the proposed bending strip and slot structures in IOWM, which is important for integrated optical applications.

Original languageEnglish
Article number027104
JournalOptical Engineering
Volume58
Issue number2
DOIs
Publication statusPublished - 1 Feb 2019

Fingerprint

Optical waveguides
slots
optical waveguides
Modulators
modulators
strip
Waveguides
waveguides
footprints
Power transmission
transmission efficiency
radii
power efficiency
tapering
converters

Keywords

  • integrated photonics
  • mode converter
  • slot waveguide
  • strip waveguide
  • waveguide bend
  • waveguides

ASJC Scopus subject areas

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

Cite this

Enhancing the performance of strip and 180-deg slot waveguide bends for integrated optical waveguide modulator. / Al-Tarawni, Musab A.M.; A Bakar, Ahmad Ashrif; Ahmad Rifqi, Md Zain; Tarawneh, Mou'ad A.; Ahmad, Sahrim.

In: Optical Engineering, Vol. 58, No. 2, 027104, 01.02.2019.

Research output: Contribution to journalArticle

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