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Ultracompact Channel Add-Drop Filter Based on Single Multimode Nanobeam Photonic Crystal Cavity

Ultracompact channel add-drop filter utilizing a single nanobeam photonic crystal cavity is analyzed, designed, and demonstrated. Anti-symmetric multimode periodic waveguide structure is employed to implement mode conversion and thus produce degenerate resonant states in the involved nanobeam cavity. Theoretical analysis results indicate that the inter-modal conversion coefficient and the waveguide-cavity coupling coefficient have significant effects on the lineshape of the filter. By carefully engineering the structure of the multimode nanobeam cavity and its side-coupled configuration, we successfully achieve an ultracompact add-drop filter with device area around 20 μm2. The experimental results on silicon-on-insulator (SOI) platform show that the insertion losses of drop port, the crosstalk of add port of the fabricated filter are -1.1 dB and -14.7 dB, respectively. The modal volume of the involved nanobeam cavity are small as 1.2(λ/n) 3 , indicating huge potentials in developing low-power consumption tunable devices for future very large scale integration (VLSI) photonic applications.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.1 January 1 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 162 - 166

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

RESONATORS
PHOTONIC CRYSTAL CAVITY
WAVELENGTH FILTERING DEVICES
ADD DROP FILTER

Info Detail Spesifik

DOI: 10.1109/JLT.2020.3024700

Pernyataan Tanggungjawab

Ping Yu, Huiye Qiu, Tingge Dai, Rui Cheng, Bin Lian, Weijun Li, Hui Yu, Jianyi Yang

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