In this study, we discuss a structure that realizes a wideband polarization splitter comprising fiber 1 with a single core and fiber 2 with circular pits, which touch the top and bottom of a single core. The refractive index profile of the W type was adopted in the core of fiber 1 to realize the wideband. We compared the maximum bandwidth of BW-15 (bandwidth at an extinction ratio of -15dB) for the W type obtained in this study with those (our previous results) of BW-15 for the step and graded types with cores and pits at the same location; this comparison clarified that the maximum bandwidth of BW-15 for the W type is 5.22 and 4.96 times wider than those of step and graded types, respectively. Furthermore, the device length at the maximum bandwidth improved, becoming slightly shorter. The main results of the FPS in this study are all obtained by numerical analysis based on our proposed MM-DM (a method that combines the multipole method and the difference method for the inhomogeneous region). Our MM-DM is a quite reliable method for high accuracy analysis of the FPS composed of inhomogeneous circular regions.
Midori NAGASAKA
Nihon University
Taiki ARAKAWA
Nihon University
Yutaro MOCHIDA
Nihon University
Kazunori KAMEDA
Sano Nihon University College
Shinichi FURUKAWA
Nihon University
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Midori NAGASAKA, Taiki ARAKAWA, Yutaro MOCHIDA, Kazunori KAMEDA, Shinichi FURUKAWA, "Band Characteristics of a Polarization Splitter with Circular Cores and Hollow Pits" in IEICE TRANSACTIONS on Electronics,
vol. E106-C, no. 4, pp. 127-135, April 2023, doi: 10.1587/transele.2022REP0003.
Abstract: In this study, we discuss a structure that realizes a wideband polarization splitter comprising fiber 1 with a single core and fiber 2 with circular pits, which touch the top and bottom of a single core. The refractive index profile of the W type was adopted in the core of fiber 1 to realize the wideband. We compared the maximum bandwidth of BW-15 (bandwidth at an extinction ratio of -15dB) for the W type obtained in this study with those (our previous results) of BW-15 for the step and graded types with cores and pits at the same location; this comparison clarified that the maximum bandwidth of BW-15 for the W type is 5.22 and 4.96 times wider than those of step and graded types, respectively. Furthermore, the device length at the maximum bandwidth improved, becoming slightly shorter. The main results of the FPS in this study are all obtained by numerical analysis based on our proposed MM-DM (a method that combines the multipole method and the difference method for the inhomogeneous region). Our MM-DM is a quite reliable method for high accuracy analysis of the FPS composed of inhomogeneous circular regions.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2022REP0003/_p
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@ARTICLE{e106-c_4_127,
author={Midori NAGASAKA, Taiki ARAKAWA, Yutaro MOCHIDA, Kazunori KAMEDA, Shinichi FURUKAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Band Characteristics of a Polarization Splitter with Circular Cores and Hollow Pits},
year={2023},
volume={E106-C},
number={4},
pages={127-135},
abstract={In this study, we discuss a structure that realizes a wideband polarization splitter comprising fiber 1 with a single core and fiber 2 with circular pits, which touch the top and bottom of a single core. The refractive index profile of the W type was adopted in the core of fiber 1 to realize the wideband. We compared the maximum bandwidth of BW-15 (bandwidth at an extinction ratio of -15dB) for the W type obtained in this study with those (our previous results) of BW-15 for the step and graded types with cores and pits at the same location; this comparison clarified that the maximum bandwidth of BW-15 for the W type is 5.22 and 4.96 times wider than those of step and graded types, respectively. Furthermore, the device length at the maximum bandwidth improved, becoming slightly shorter. The main results of the FPS in this study are all obtained by numerical analysis based on our proposed MM-DM (a method that combines the multipole method and the difference method for the inhomogeneous region). Our MM-DM is a quite reliable method for high accuracy analysis of the FPS composed of inhomogeneous circular regions.},
keywords={},
doi={10.1587/transele.2022REP0003},
ISSN={1745-1353},
month={April},}
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TY - JOUR
TI - Band Characteristics of a Polarization Splitter with Circular Cores and Hollow Pits
T2 - IEICE TRANSACTIONS on Electronics
SP - 127
EP - 135
AU - Midori NAGASAKA
AU - Taiki ARAKAWA
AU - Yutaro MOCHIDA
AU - Kazunori KAMEDA
AU - Shinichi FURUKAWA
PY - 2023
DO - 10.1587/transele.2022REP0003
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E106-C
IS - 4
JA - IEICE TRANSACTIONS on Electronics
Y1 - April 2023
AB - In this study, we discuss a structure that realizes a wideband polarization splitter comprising fiber 1 with a single core and fiber 2 with circular pits, which touch the top and bottom of a single core. The refractive index profile of the W type was adopted in the core of fiber 1 to realize the wideband. We compared the maximum bandwidth of BW-15 (bandwidth at an extinction ratio of -15dB) for the W type obtained in this study with those (our previous results) of BW-15 for the step and graded types with cores and pits at the same location; this comparison clarified that the maximum bandwidth of BW-15 for the W type is 5.22 and 4.96 times wider than those of step and graded types, respectively. Furthermore, the device length at the maximum bandwidth improved, becoming slightly shorter. The main results of the FPS in this study are all obtained by numerical analysis based on our proposed MM-DM (a method that combines the multipole method and the difference method for the inhomogeneous region). Our MM-DM is a quite reliable method for high accuracy analysis of the FPS composed of inhomogeneous circular regions.
ER -