Ultra-short polarization splitter based on a plasmonic dual-core photonic crystal fiber with an ultra-broad bandwidth

Md. Tarek Rahman; Abdul Khaleque

doi:10.1364/AO.58.009426

Ultra-short polarization splitter based on a plasmonic dual-core photonic crystal fiber with an ultra-broad bandwidth

Md. Tarek Rahman and Abdul Khaleque

Applied Optics
Vol. 58,
Issue 34,
pp. 9426-9433
(2019)
•https://doi.org/10.1364/AO.58.009426

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Md. Tarek Rahman and Abdul Khaleque, "Ultra-short polarization splitter based on a plasmonic dual-core photonic crystal fiber with an ultra-broad bandwidth," Appl. Opt. 58, 9426-9433 (2019)

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- Optical Devices, Sensors, and Detectors
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About this Article
History
- Original Manuscript: July 29, 2019
- Revised Manuscript: October 13, 2019
- Manuscript Accepted: October 22, 2019
- Published: November 25, 2019

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Abstract

A compact polarization beam splitter based on a gold-filled photonic crystal fiber with a square lattice is proposed. The full vector finite element method is used to design and characterize the proposed ultra-compact and ultra-broadband polarization splitter. The plasmonic plays an important role in order to achieve an ultra-short length of 56.33 µm with a high extinction ratio of 132.92 dB at the wavelength of 1.55 µm. It can ensure an ultra-broad bandwidth of 530 nm, from 1225 to 1755 nm, covering all the communication bands with an extinction ratio better than 20 dB. The proposed polarization splitter may be a promising candidate in communication due to its ultra-short length and ultra-broad bandwidth.

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${\varepsilon _\infty }$ $ε_{\infty}$	${\omega _D}/2\pi $ $ω_{D} / 2 π$ (THz)	${\gamma _D}/2\pi $ $γ_{D} / 2 π$ (THz)	${{\rm \Omega }_L}/2\pi $ $Ω_{L} / 2 π$ (THz)	${{\rm \Gamma }_L}/2\pi $ $Γ_{L} / 2 π$ (THz)	$\Delta_\varepsilon$ $Δ_{ε}$
5.9673	2113.6	15.92	650.07	104.86	1.09

Reference No.	Device Length (µm)	ER (dB)	Bandwidth (Ref. Level)	Working Spectrum (nm)
[31]	401	110.1	200 nm (10 dB)	1450–1650
[21]	4036	−78.2	430 nm (−20 dB)	1250–1680
[22]	254.6	−111	560 nm (−20 dB)	1420–1980
[23]	117	−100	460 nm (−20 dB)	1250–1710
[26]	93.3	−79.3	70 nm (−20 dB)	–
[27]	103	−73	177 nm (−20 dB)	1508–1587
[28]	89.005	107.21	150 nm (20 dB)	1473–1623
[16]	78	87	44 nm (15 dB)	1522–1566
[17]	83.9	−44.05	32.1 nm (−10 dB)	1567–1535
[24]	100	62	470 nm (20 dB)	1390–1860
Proposed splitter	56.33	132.92	530 nm (20 dB)	1225–1755

${\varepsilon _\infty }$ $ε_{\infty}$	${\omega _D}/2\pi $ $ω_{D} / 2 π$ (THz)	${\gamma _D}/2\pi $ $γ_{D} / 2 π$ (THz)	${{\rm \Omega }_L}/2\pi $ $Ω_{L} / 2 π$ (THz)	${{\rm \Gamma }_L}/2\pi $ $Γ_{L} / 2 π$ (THz)	$\Delta_\varepsilon$ $Δ_{ε}$
5.9673	2113.6	15.92	650.07	104.86	1.09

Reference No.	Device Length (µm)	ER (dB)	Bandwidth (Ref. Level)	Working Spectrum (nm)
[31]	401	110.1	200 nm (10 dB)	1450–1650
[21]	4036	−78.2	430 nm (−20 dB)	1250–1680
[22]	254.6	−111	560 nm (−20 dB)	1420–1980
[23]	117	−100	460 nm (−20 dB)	1250–1710
[26]	93.3	−79.3	70 nm (−20 dB)	–
[27]	103	−73	177 nm (−20 dB)	1508–1587
[28]	89.005	107.21	150 nm (20 dB)	1473–1623
[16]	78	87	44 nm (15 dB)	1522–1566
[17]	83.9	−44.05	32.1 nm (−10 dB)	1567–1535
[24]	100	62	470 nm (20 dB)	1390–1860
Proposed splitter	56.33	132.92	530 nm (20 dB)	1225–1755

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