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Hokkaido University Collection of Scholarly and Academic Papers >
Showing results 1 to 20 of 64
| Type | Author(s) | Title | Other Titles | Citation | Citation(alt) | Issue Date | | article | Fujisawa, Takeshi; Saitoh, Kunimasa | Arbitrary higher-order optical spatial state generation by using spontaneously broken degeneracy modes in helically twisted ring-core hole assisted fibers | - | Optics express | - | 22-Jun-2022 |
| article (author version) | Wang, Yizhou; Fujisawa, Takeshi; Saitoh, Kunimasa | Analytical expression for mode-coupling coefficient between non-identical step-index cores and its application to multi-core fiber design within 125-mu m cladding diameter | - | Optics communications | - | 1-Mar-2022 |
| article | Saitoh, Kunimasa | Multi-Core Fiber Technology for SDM: Coupling Mechanisms and Design | - | Journal Of Lightwave Technology | - | 25-Jan-2022 |
| article (author version) | Sugawara, Naoto; Fujisawa, Takeshi; Nakamura, Kodai; Sawada, Yusuke; Mori, Takayoshi; Sakamoto, Taiji; Imada, Ryota; Matsui, Takashi; Nakajima, Kazuhide; Saitoh, Kunimasa | Modal amplitude and phase estimation of multimode near field patterns based on artificial neural network with the help of grey-wolf-optimizer | - | Optical fiber technology | - | Dec-2021 |
| article | Fujisawa, Takeshi; Saitoh, Kunimasa | Arbitrary polarization and orbital angular momentum generation based on spontaneously broken degeneracy in helically twisted ring-core photonic crystal fibers | - | Optics express | - | 27-Sep-2021 |
| article | Sawada, Yusuke; Fujisawa, Takeshi; Sato, Takanori; Saitoh, Kunimasa | Broadband silicon four-mode multi/demultiplexer designed by a wavefront matching method | - | Optics express | - | 16-Aug-2021 |
| article (author version) | Fujisawa, Takeshi; Sakamoto, Taiji; Miyata, Masashi; Matsui, Takashi; Hashimoto, Toshikazu; Kasahara, Ryoichi; Mori, Takayoshi; Imada, Ryota; Nakajima, Kazuhide; Saitoh, Kunimasa | Six-mode scrambler based on cascaded side-wall grating waveguides | - | Japanese Journal of Applied Physics (JJAP) | - | 18-May-2021 |
| article | Nakamura, Kodai; Fujisawa, Takeshi; Sato, Takanori; Saitoh, Kunimasa | High-tolerance CWDM4 wavelength multiplexer based on 2x2/2x1 MZ filters with polarization multiplexing | - | IEICE electronics express | - | 25-Apr-2021 |
| article | Fujisawa, Takeshi; Saitoh, Kunimasa | Bayesian direct-binary-search algorithm for the efficient design of mosaic-based power splitters | - | OSA Continuum | - | 15-Apr-2021 |
| article (author version) | Fujisawa, Takeshi; Takano, Junya; Sawada, Yusuke; Saitoh, Kunimasa | Low-Loss and Small 2 x 4 lambda Multiplexers Based on 2 x 2 and 2 x 1 Mach-Zehnder Interferometers With On-Chip Polarization Multiplexing for 400GbE | - | Journal of lightwave technology | - | 1-Jan-2021 |
| article | Sawada, Yusuke; Fujisawa, Takeshi; Saitoh, Kunimasa | Broadband and compact silicon mode converter designed using a wavefront matching method | - | Optics express | - | 7-Dec-2020 |
| article | Fujisawa, Takeshi; Saitoh, Kunimasa | Geometric-phase-induced arbitrary polarization and orbital angular momentum generation in helically twisted birefringent photonic crystal fiber | - | Photonics Research | - | 1-Aug-2020 |
| article | Shirata, Motoki; Fujisawa, Takeshi; Sakamoto, Taiji; Matsui, Takashi; Nakajima, Kazuhide; Saitoh, Kunimasa | Design of small mode-dependent-loss scrambling-type mode (de) multiplexer based on PLC | - | Optics express | - | 30-Mar-2020 |
| article | Fujisawa, Takeshi; Takano, Junya; Sawada, Yusuke; Sakamoto, Taiji; Matsui, Takashi; Nakajima, Kazuhide; Saitoh, Kunimasa | A novel Si four-wavelength multiplexer for 100/400GbE using higher-order mode composed of (a)symmetric directional couplers and TE1-TM0 mode converter | - | Optics express | - | 9-Dec-2019 |
| article | Sato, Takanori; Fujisawa, Takeshi; Saitoh, Kunimasa | All-Optical Diode Suppressing Broadband Backward Transmission Using Single- and Four-Port Photonic Crystal Cavities | - | IEEE photonics journal | - | Feb-2019 |
| article (author version) | Akie, Minami; Fujisawa, Takeshi; Sato, Takanori; Arai, Masakazu; Saitoh, Kunimasa | GeSn/SiGeSn Multiple-Quantum-Well Electroabsorption Modulator With Taper Coupler for Mid-Infrared Ge-on-Si Platform | - | IEEE journal of selected topics in quantum electronics | - | Nov-2018 |
| article | Ohta, S.; Fujisawa, T.; Makino, S.; Sakamoto, T.; Matsui, T.; Tsujikawa, K.; Nakajima, K.; Saitoh, K. | Si-based Mach-Zehnder wavelength/mode multi/demultiplexer for a WDM/MDM transmission system | - | Optics express | - | 11-Jun-2018 |
| article | Fujisawa, Takeshi; Amma, Yoshimichi; Sasaki, Yusuke; Matsuo, Shoichiro; Aikawa, Kazuhiko; Saitoh, Kunimasa; Koshiba, Masanori | Crosstalk Analysis of Heterogeneous Multicore Fibers Using Coupled-Mode Theory | - | IEEE photonics journal | - | Oct-2017 |
| article (author version) | Yamashita, Yoko; Makino, Shuntaro; Fujisawa, Takeshi; Hanzawa, Nobutomo; Sakamoto, Taiji; Matsui, Takashi; Tsujikawa, Kyozo; Yamamoto, Fumihiko; Nakajima, Kazuhide; Saitoh, Kunimasa | PLC-Based LP11 Mode Rotator With Curved Trench Structure Devised From Wavefront Matching Method | - | IEEE photonics technology letters | - | 1-Jul-2017 |
| article (author version) | Fujisawa, Takeshi; Saitoh, Kunimasa | Group delay spread analysis of coupled-multicore fibers : A comparison between weak and tight bending conditions | - | Optics communications | - | 15-Jun-2017 |
Showing results 1 to 20 of 64
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