Multimode interference-Based 1 x 8 optical power splitter using GaN semiconductors

Dini Fithriaty Puspohadiningrum, Anita Ratnasari, Maratul Hamidah, Muhammad Raditya Gumelar, Nji Raden Poespawati, Retno Wigajatri Purnamaningsih

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The introduced design is a 1 × 8 optical power splitter using MMI structure and taper output branches in GaN semiconductors. The design has been conducted theoretically using 3D FD-OptiBPM to improve the power distribution. The modelling structure used 300 nm AlN and 200 nm AlGaN as the buffer layer on Sapphire respectively. The numerical experiment is carried out at an optical telecommunication wavelength at λ = 1.55 μm. The refractive indices of the layers used are n TE = 2.279 ± 0.001 and n TM = 2.316 ± 0.001. The result showed that the optimum width and thickness of input and output rib waveguides are 4 μm and support only single mode propagation. The MMI-based optical power splitter with a length of 2010 μm and a width of 85 μm is the best result. In this proposed design, the output power splitted in almost uniform into eight output branches. It is also shown that the total relative power at the output ports is 0.96 with an excess loss of 0.28 dB and power imbalance of 0.13 dB.

Original languageEnglish
Title of host publicationThird International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2018
EditorsAgus Muhammad Hatta, Aulia Nasution
PublisherSPIE
ISBN (Electronic)9781510627543
DOIs
Publication statusPublished - 1 Jan 2019
Event3rd International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2018 - Surabaya, Indonesia
Duration: 1 Aug 20182 Aug 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11044
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference3rd International Seminar on Photonics, Optics, and Its Applications, ISPhOA 2018
Country/TerritoryIndonesia
CitySurabaya
Period1/08/182/08/18

Keywords

  • FD-BPM method
  • GaN
  • MMI structure
  • Optical communication
  • Optical power splitter
  • Optical waveguide
  • Photonic device
  • Taper branch

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