| Presentation | 2017-01-19 Consideration of effects of a core location on bend losses in a buried waveguide Hiroto Watanabe, Yuta Nito, Junji Yamauchi, Hisamatsu Nakano, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper describes the effects of a core depth on the pure bend loss in a buried waveguide whose core is placed near an air-cladding interface. The eigenmode analysis of a straight waveguide shows that the field extends as the distance between the core and the air region is decreased. Since the extended field is liable to be transformed into a leaky wave when the waveguide is bent, the pure bend loss may increase as the core location approaches the air-cladding interface. On the other hand, the eigenmode field of a bent waveguide reveals that the field is formed depending on the phase relation between the original and folded waves at the air-cladding interface, leading to reduction of the pure bend loss. As a result, the opposite effects occur, which are caused by the appearance and disappearance of the leaky wave as a function of core depth, so that there exists a core location where the total pure bend loss is minimized. Finally, to confine the field to the core and suppress a leaky wave near the air-cladding interface, we propose a new technique based on the introduction of a partial over-cladding layer. The present structure reduces not only the pure bend loss but also the polarization dependent loss over a wide spectral range. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Beam-propagation method / bent waveguide / bending loss |
| Paper # | PN2016-77,EMT2016-106,OPE2016-152,LQE2016-141,EST2016-116,MWP2016-90 |
| Date of Issue | 2017-01-11 (PN, EMT, OPE, LQE, EST, MWP) |
| Conference Information | |
| Committee | OPE / EST / LQE / EMT / PN / MWP / IEE-EMT |
|---|---|
| Conference Date | 2017/1/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Iseshi Kanko Bunka Kaikan |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Kensuke Ogawa(Fujikura) / Hideaki Kimura(NTT) / Susumu Noda(Kyoto Univ.) / Motoyuki Sato(Tohoku Univ.) / Eiji Oki(Univ. of Electro-Comm.) / Yuichi Kado(Kyoto Inst. of Tech.) / Masahiro Tanaka(Gifu Univ.) |
| Vice Chair | Kazutoshi Kato(Kyushu Univ.) / Shinichiro Ohnuki(Nihon Univ.) / Akimasa Hirata(Nagoya Inst. of Tech.) / Tsuyoshi Yamamoto(Fujitsu Labs.) / Akira Hirose(Univ. of Tokyo) / Hiroshi Hasegawa(Nagoya Univ.) / Takehiro Tsuritani(KDDI Labs.) / Haruki Ogoshi(Furukawa Electric) / Tetsuya Kawanishi(Waseda Univ.) / Hiroyuki Toda(Doshisha Univ.) |
| Secretary | Kazutoshi Kato(Keio Univ.) / Shinichiro Ohnuki(Mitsubishi Electric) / Akimasa Hirata(Muroran Inst. of Tech.) / Tsuyoshi Yamamoto(Tohoku Univ.) / Akira Hirose(NTT) / Hiroshi Hasegawa(Tohoku Univ.) / Takehiro Tsuritani(Mitsubishi Electric) / Haruki Ogoshi(Univ. of Hyogo) / Tetsuya Kawanishi(NICT) / Hiroyuki Toda(Osaka Univ.) / (ENRI) |
| Assistant | Atsushi Aratake(NTT) / Katsumi Nakatsuhara(Kanagawa Inst. of Tech.) / Atsushi Kezuka(ENRI) / Kenji Taguchi(Kitami Inst. of Tech.) / / Tsuyoshi Matsuoka(Kyushu Sangyo Univ.) / Masahiro Nakagawa(NTT) / Soichiro Kametani(Mitsubishi Electric) / Kensuke Ikeda(CRIEPI) / Atsushi Kanno(NICT) / Yoshihiro NAKA(Kyushu University of Health and Welfare) |
| Paper Information | |
| Registration To | Technical Committee on OptoElectronics / Technical Committee on Electronics Simulation Technology / Technical Committee on Lasers and Quantum Electronics / Technical Committee on Electromagnetic Theory / Technical Committee on Photonic Network / Technical Committee on Microwave and Millimeter-wave Photonics / Technical Meeting on Electromagnetic Theory |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Consideration of effects of a core location on bend losses in a buried waveguide |
| Sub Title (in English) | |
| Keyword(1) | Beam-propagation method |
| Keyword(2) | bent waveguide |
| Keyword(3) | bending loss |
| 1st Author's Name | Hiroto Watanabe |
| 1st Author's Affiliation | Hosei University(Hosei Univ.) |
| 2nd Author's Name | Yuta Nito |
| 2nd Author's Affiliation | Hosei University(Hosei Univ.) |
| 3rd Author's Name | Junji Yamauchi |
| 3rd Author's Affiliation | Hosei University(Hosei Univ.) |
| 4th Author's Name | Hisamatsu Nakano |
| 4th Author's Affiliation | Hosei University(Hosei Univ.) |
| Date | 2017-01-19 |
| Paper # | PN2016-77,EMT2016-106,OPE2016-152,LQE2016-141,EST2016-116,MWP2016-90 |
| Volume (vol) | vol.116 |
| Number (no) | PN-386,EMT-387,OPE-388,LQE-389,EST-390,MWP-391 |
| Page | pp.pp.241-246(PN), pp.241-246(EMT), pp.241-246(OPE), pp.241-246(LQE), pp.241-246(EST), pp.241-246(MWP), |
| #Pages | 6 |
| Date of Issue | 2017-01-11 (PN, EMT, OPE, LQE, EST, MWP) |