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Simultaneous Mode and Polarization Conversions Via Periodic Grating Engraved on Strip Waveguide

A converter that manipulates the energy exchange between two arbitrary guided modes having different mode orders and polarization states is proposed. This objective is achieved through engraving a periodic grating on a strip waveguide. Theoretical analysis, based on the coupled-mode theory, is developed to match the proposed structure. In addition, coupling analysis is addressed to provide a comprehensive view regarding the various couplings that can be achieved, including acceptable margins for perturbation designing parameters and their optimum values for each coupling. Moreover, our converter is implemented via both 3D-FDTD simulation and computational solution to examine the validity of the proposed approach and verify the coupling analysis through performing two conversions, namely TM 1 -to-TE 0 and TM 1 -to-TE 3 . The first conversion is obtained with an insertion loss of −1 dB and a crosstalk lower than −17.5 dB at a conversion length of 9.15μ m. The second is executed with an insertion loss of −1.5 dB and a crosstalk lower than −15 dB at a conversion length of 16.937μ m. Furthermore, tolerance fabrication analysis is implemented to confirm the degree of stability that the proposed structure can achieve. Finally, the findings reveal that the proposed design achieved its function at a compact length and without being restricted by the hybridization approach.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.23 December 1 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 7486-7495

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

INTEGRATED OPTICS DEVICES
SILICON-ON-INSULATOR
BRAGG GRATING
COUPLED-MODE THEORY
MODE CHART
MODE-DIVISION MULTIPLEXERS
OPTICAL CONVENTERS
POLARIZATIONS-DIVISION MULTIPLEXERS
POLARIZATION ROTATORS

Info Detail Spesifik

10.1109/JLT.2021.3115410

Pernyataan Tanggungjawab

Eman A. Elzahaby, Ahmed M. R. Fath Elbab, Hossam M. H. Shalaby

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