Microring resonator composed of vertical slot waveguides with minimum polarization mode dispersion over a wide spectral range

Po-Han Fu; Tsung-Yu Chiang; Nai-Chia Cheng; Yao-Feng Ma; Ding-Wei Huang

doi:10.1364/AO.55.003626

Applied Optics
Vol. 55,
Issue 13,
pp. 3626-3631
(2016)
•https://doi.org/10.1364/AO.55.003626

Microring resonator composed of vertical slot waveguides with minimum polarization mode dispersion over a wide spectral range

Po-Han Fu, Tsung-Yu Chiang, Nai-Chia Cheng, Yao-Feng Ma, and Ding-Wei Huang

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Po-Han Fu, Tsung-Yu Chiang, Nai-Chia Cheng, Yao-Feng Ma, and Ding-Wei Huang, "Microring resonator composed of vertical slot waveguides with minimum polarization mode dispersion over a wide spectral range," Appl. Opt. 55, 3626-3631 (2016)

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- Integrated Optics
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About this Article
History
- Original Manuscript: February 26, 2016
- Revised Manuscript: April 11, 2016
- Manuscript Accepted: April 11, 2016
- Published: April 28, 2016

Abstract

This paper proposes the design of a vertical slot waveguide-based optical ring resonator on a silicon photonic platform with minimized polarization mode dispersion (PMD) in the presence of waveguide dispersion over a wide band. Slot waveguides provide more degrees of freedom in the design, thereby achieving the minimum PMD over the communication wavelengths. The minimum PMD leads to nearly identical accumulated phase in the optical ring resonator for quasi-TE and TM modes, and thus the resonant wavelength mismatch between the quasi-TE and TM modes can be minimized from 1510 to 1590 nm.

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$λ$ (nm)	$n_{eff, TE}$	$n_{eff, TM}$	$Δ n_{eff}$
1510	1.81425	1.81388	$3.73 \times 10^{- 4}$
1530	1.78195	1.78189	$5.76 \times 10^{- 5}$
1550	1.75144	1.75144	$1.16 \times 10^{- 6}$
1570	1.72214	1.72243	$- 2.92 \times 10^{- 4}$
1590	1.69465	1.69498	$- 3.32 \times 10^{- 4}$

$λ$ (nm)	$n_{eff, TE}$	$n_{eff, TM}$	$Δ n_{eff}$
1510	1.81124	1.81124	$- 2.56 \times 10^{- 4}$
1530	1.77919	1.77945	$- 2.53 \times 10^{- 4}$
1550	1.74873	1.74901	$- 2.80 \times 10^{- 4}$
1570	1.71987	1.72000	$- 1.31 \times 10^{- 4}$
1590	1.69264	1.69250	$1.39 \times 10^{- 4}$

$m$	$λ_{TE, m}$ (nm)	$λ_{TM, m}$ (nm)	$m$	$λ_{TE, m}$ (nm)	$λ_{TM, m}$ (nm)
81	1582.95	1582.82	86	1542.21	1542.18
82	1574.42	1574.31	87	1534.58	1534.58
83	1566.10	1566.00	88	1527.71	1527.71
84	1557.98	1557.88	89	1519.77	1519.84
85	1550.00	1550.00	90	1512.58	1512.68

	Quasi-TE	Quasi-TM
$w$	160 nm	160 nm
$w_{s}$	68 nm	68 nm
$g$	298.6 nm	293.7 nm
$n_{Si}$ (Straight)	2.7874	2.2202
$n_{Si}$ (Bent)	2.7904	2.2233
$n_{Slot}$	1.6896	1.8185

$λ$ (nm)	$n_{eff, TE}$	$n_{eff, TM}$	$Δ n_{eff}$
1510	1.81425	1.81388	$3.73 \times 10^{- 4}$
1530	1.78195	1.78189	$5.76 \times 10^{- 5}$
1550	1.75144	1.75144	$1.16 \times 10^{- 6}$
1570	1.72214	1.72243	$- 2.92 \times 10^{- 4}$
1590	1.69465	1.69498	$- 3.32 \times 10^{- 4}$

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Applied Optics