Polarization beam splitter with different core widths and its application to dual-polarization optical hybrid

Yasuaki Hashizume, Takashi Goh, Yasuyuki Inoue, Kiichi Hamamoto, Mikitaka Itoh

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We investigated the core-width dependence of the birefringence of silica-based waveguides with different relative refractive index differences (Δ), namely a 0.75%-Δ GeO2-doped waveguide and a 5%-Δ Ta2O5-doped waveguide. We revealed that the birefringence of the 0.75%-Δ GeO2-doped waveguide is almost the same as the stress-induced birefringence and that the 5%-Δ Ta2O5-doped waveguide has a large geometrical birefringence. By utilizing the core-width dependence of the birefringence, we have successfully demonstrated a 0.75%-Δ polarization beam splitter (PBS) with an operating wavelength range of more than 150 nm and a dual-polarization optical hybrid including a compact 5%-Δ PBS with a polarization extinction ratio of more than 20 dB over the C-band.

Original languageEnglish
Article number7005394
Pages (from-to)408-414
Number of pages7
JournalJournal of Lightwave Technology
Volume33
Issue number2
DOIs
Publication statusPublished - Jan 15 2015

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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