| Presentation | 2015-10-29 A Polarization Splitter and Converter Using a Curvilinearly Tapered Waveguide Shunya Fujimura, Yuta Nito, Junji Yamauchi, Hisamatsu Nakano, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A curvilinearly tapered waveguide is introduced to improve the characteristics of a polarization splitter and converter, whose characteristics are investigated by the beam-propagation method. First, a polarization splitter and a converter are separately investigated. To achieve a splitter with a short device length, a conventional linearly tapered core is transformed into a curvilinearly tapered one. As a result, a crosstalk of less than -20 dB is achieved over a wavelength range of 1.35 $mu$m to 1.7 $mu$m. Next, we introduce a similar taper profile into a polarization converter. The use of the curvilinearly tapered core again allows us to achieve a polarization converter with a reduced device length. Furthermore, the wide wavelength characteristic is obtained by partially removing the upper core near the output, since the polarization recoupling is avoided. Finally, we combine the modified polarization splitter and converter. The combined structure achieves both crosstalk and extinction ratio of less than -15 dB over a wide wavelength range of 1.33 $mu$m to 1.7 $mu$m with a quarter device length, compared with a conventional structure based on the linearly tapered core. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Polarization splitter and converter / Polarization splitter / Polarization converter / Curvilinear taper / Beam-propagation method |
| Paper # | OCS2015-42,OPE2015-92,LQE2015-61 |
| Date of Issue | 2015-10-22 (OCS, OPE, LQE) |
| Conference Information | |
| Committee | OPE / LQE / OCS |
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| Conference Date | 2015/10/29(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Beppu International Convention Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroyuki Uenohara(Tokyo Inst. of Tech.) / Hajime Shoji(Sumitomo Electric Industries) / Kiyoshi Fukuchi(NEC) |
| Vice Chair | Kensuke Ogawa(Fujikura) / Susumu Noda(Kyoto Univ.) / Akira Hirano(NTT) |
| Secretary | Kensuke Ogawa(Fujitsu Labs.) / Susumu Noda(NTT) / Akira Hirano(NICT) |
| Assistant | Takaaki Ishigure(Keio Univ.) / Eiji Yagyu(Mitsubishi Electric) |
| Paper Information | |
| Registration To | Technical Committee on Optoelectronics / Technical Committee on Lasers and Quantum Electronics / Technical Committee on Optical Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Polarization Splitter and Converter Using a Curvilinearly Tapered Waveguide |
| Sub Title (in English) | |
| Keyword(1) | Polarization splitter and converter |
| Keyword(2) | Polarization splitter |
| Keyword(3) | Polarization converter |
| Keyword(4) | Curvilinear taper |
| Keyword(5) | Beam-propagation method |
| 1st Author's Name | Shunya Fujimura |
| 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 | 2015-10-29 |
| Paper # | OCS2015-42,OPE2015-92,LQE2015-61 |
| Volume (vol) | vol.115 |
| Number (no) | OCS-276,OPE-277,LQE-278 |
| Page | pp.pp.5-10(OCS), pp.5-10(OPE), pp.5-10(LQE), |
| #Pages | 6 |
| Date of Issue | 2015-10-22 (OCS, OPE, LQE) |