Optimizing an integrated waveguide modulator for sensitive low-frequency alternating-current electric-field sensors

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The use of integrated waveguide modulators is a common technique in electric-field sensing. However, the distortion in the modulated signal caused by high half-voltage Vπ and the difficulty in obtaining low-frequency responses are challenging issues for the use of low-frequency alternating-current (AC) electric-field sensors. This study investigates the use of an optimized segmented slot waveguide as the core of a sensor to determine the sensor features that produce useful frequency responses and sensitivity. The segmented slot waveguide is optimized in terms of periodicity and segment width to produce low Vπ and electrical bandwidth before testing the sensor sensitivity. The results show that reducing the segment width achieves a low Vπ of 0.32 V and a very low electrical bandwidth of 4.3 kHz. Our study provides evidence of the feasibility of using a segmented slot waveguide as the primary element for highly sensitive, low-frequency AC electric-field sensors.

Original languageEnglish
Article number067101
JournalOptical Engineering
Volume56
Issue number6
DOIs
Publication statusPublished - 1 Jun 2017

Fingerprint

Modulators
modulators
alternating current
Waveguides
Electric fields
low frequencies
waveguides
electric fields
slots
sensors
Sensors
frequency response
Frequency response
bandwidth
Bandwidth
periodic variations
sensitivity
Testing
Electric potential
electric potential

Keywords

  • electric-field sensor
  • half-wave voltage
  • integrated waveguide modulator
  • optical sensor
  • overlap integral factor
  • segmented slot waveguide

ASJC Scopus subject areas

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

Cite this

Optimizing an integrated waveguide modulator for sensitive low-frequency alternating-current electric-field sensors. / Al-Tarawni, Musab A.M.; A Bakar, Ahmad Ashrif; Ahmad Rifqi, Md Zain; Tarawneh, Mou'ad A.; Ahmad, Sahrim.

In: Optical Engineering, Vol. 56, No. 6, 067101, 01.06.2017.

Research output: Contribution to journalArticle

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