Demonstration of a high extinction ratio TiN-based TM-pass waveguide polarizer

• Autorzy: Zhao Zhuan , Santi Giovanni , Corso Alain Jody , Pelizzo Maria Guglielmina

Identyfikatory

DOI

10.37190/oa220409

• Języki publikacji: EN

Abstrakty

EN

A high extinction ratio transverse magnetic (TM)-pass plasmonic waveguide polarizer has been designed and optimized. This device exploits two parallel TiN strips embedded in a silicon dioxide cladding to cut off the transverse electric (TE) polarization state, which is either reflected or absorbed, while the TM mode can pass through the main silicon waveguide with significant low losses. Given a device of 5 μm length, an extinction ratio as high as 60.7 dB and an insertion loss of 2.23 dB were achieved at the target wavelength of 1.55 μm. To our knowledge, this extinction ratio is one of the highest values ever reported. In the wavelength of 1.45–1.59 μm, the proposed device provides an optical bandwidth of 140 nm for an extinction ratio more than 30 dB and an insertion loss less than 3 dB. This device is relatively simple and is easier to be fabricated than other architectures that are found in the literature.

Słowa kluczowe

EN

plasmonic waveguide polarizer; extinction ratio; insertion loss; broadband

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2022
• Tom: Vol. 52, nr 4
• Strony: 585--598
• Opis fizyczny: Bibliogr. 60 poz., rys., tab.

Twórcy

autor

Zhao Zhuan

• Department of Information Engineering, University of Padova, Via Gradenigo 6/B, 35131, Padova, Italy
• School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China

autor

Santi Giovanni

• Centro di Ateneo di Studi e Attività Spaziali (CISAS), Università di Padova, via Venezia, 15, 35131, Padova, Italy

autor

Corso Alain Jody

• Istituto di Fotonica e Nanotecnologie (CNR-IFN), Consiglio Nazionale delle Ricerche, via Trasea, 7, 35131 Padova, Italy

autor

Pelizzo Maria Guglielmina

• Department of Information Engineering, University of Padova, Via Gradenigo 6/B, 35131, Padova, Italy

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).