10 Gb/s WDM Transmission at 1064 and 1550 nm over 24 km Photonic Crystal Fiber with Negative Power Penalties. - Kenji Kurokawa; Kyozo Tsujikawa; Katsusuke Tajima; Kazuhide Nakajima; Izumi Sankawa (IEICE Trans. Commun., 2007)

Power dependence of fiber fuse propagation with a long-period damage track in hole-assisted fiber. - Kenji Kurokawa; Nobutomo Hanzawa; Kyozo Tsujikawa; Shigeru Tomita (IEICE Electron. Express, 2011)

Fiber Endface Sealing Technique for Optical Connection of Holey Fibers with Low Loss and Reflection. - Masaki Waki; Kyozo Tsujikawa; Yuji Azuma (IEICE Trans. Commun., 2012)

3.5 W optical power delivery over 5 km single-mode fiber using C-band amplified spontaneous emission light source. - Lin Ma; Kyozo Tsujikawa; Nobutomo Hanzawa; Fumihiko Yamamoto (OFC/NFOEC, 2013)

Low-loss and broadband PLC-type mode (de)multiplexer for mode-division multiplexing transmission. - Takui Uematsu; Kunimasa Saitoh; Nobutomo Hanzawa; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Masanori Koshiba (OFC/NFOEC, 2013)

Four-mode PLC-based mode multi/demultiplexer with LP11 mode rotator on one chip for MDM transmission. - Nobutomo Hanzawa; Kunimasa Saitoh; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Takui Uematsu; Fumihiko Yamamoto (ECOC, 2014)

PLC-type LP11 mode rotator with single-trench waveguide for mode-division multiplexing transmission. - Takui Uematsu; Nobutomo Hanzawa; Kunimasa Saitoh; Yuhei Ishizaka; Kouhei Masumoto; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Fumihiko Yamamoto (OFC, 2014)

Demonstration of PLC-based six-mode multiplexer for mode division multiplexing transmission. - Nobutomo Hanzawa; Kunimasa Saitoh; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Takeshi Fujisawa; Yuhei Ishizaka; Fumihiko Yamamoto (ECOC, 2015)

Fiber fuse propagation in LPn mode in few-mode fiber. - Nobutomo Hanzawa; Kenji Kurokawa; Kyozo Tsujikawa; Takayoshi Mori; Masaki Wada; Fumihiko Yamamoto (OFC, 2015)

125 μm-cladding 2LP-mode and 4-core Multi-core Fibre with Air-hole Structure for Low Crosstalk in C+L Band. - Saki Nozoe; Taiji Sakamoto; Takashi Matsui; Yoshimichi Amma; Katsuhiro Takenaga; Yoshiteru Abe; Kyozo Tsujikawa; Shinichi Aozasa; Kazuhiko Aikawa; Kazuhide Nakajima (ECOC, 2017)

Mach-Zehnder Mode/Wavelength (De)Multiplexer for WDM/MDM Optical Transmission. - Shun Ohta; Takeshi Fujisawa; Shuntaro Makino; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Kazuhide Nakajima; Kunimasa Saitoh (ECOC, 2017)

Characteristic of Splicing Misalignment Induced Mode Dependent Loss for Coupled Multi-core Fibre. - Taiji Sakamoto; Takayoshi Mori; Masaki Wada; A. Urushibara; Takashi Yamamoto; Shinichi Aozasa; Saki Nozoe; Yuto Sagae; Kyozo Tsujikawa; Kazuhide Nakajima (ECOC, 2017)

Full C-band Low Mode Dependent and Flat Gain Amplifier using Cladding Pumped Randomly Coupled 12-core EDF. - Masaki Wada; Taiji Sakamoto; Takashi Yamamoto; Shinichi Aozasa; Saki Nozoe; Yuto Sagae; Kyozo Tsujikawa; Kazuhide Nakajima (ECOC, 2017)

Bending radius dependence of spatial mode dispersion in randomly coupled multi-core fiber. - Shinichi Aozasa; Taiji Sakamoto; Saki Nozoe; Yuto Sagae; Masaki Wada; Takayoshi Mori; Kyozo Tsujikawa; Takashi Yamamoto; Kazuhide Nakajima (OFC, 2017)

One chip, PLC three-mode exchanger based on symmetric and asymmetric directional couplers with integrated mode rotator. - Takeshi Fujisawa; Eri Taguchi; Taiji Sakamoto; Takashi Matsui; Yoko Yamashita; Kyozo Tsujikawa; Kazuhide Nakajima; Kunimasa Saitoh (OFC, 2017)

Scrambling-type three-mode multiplexer based on cascaded Y-branch waveguide with integrated mode rotator on PLC platform. - Takeshi Fujisawa; Yoko Yamashita; Taiji Sakamoto; Takashi Matsui; Shuntaro Makino; Kyozo Tsujikawa; Kazuhide Nakajima; Kunimasa Saitoh (OFC, 2017)

Low crosstalk 125 μm-cladding multi-core fiber with limited air-holes fabricated with over-cladding bundled rods technique. - Saki Nozoe; Ryohei Fukumoto; Taiji Sakamoto; Takashi Matsui; Yoshimichi Amma; Katsuhiro Takenaga; Kyozo Tsujikawa; Shinichi Aozasa; Kazuhiko Aikawa; Kazuhide Nakajima (OFC, 2017)

Randomly-coupled single-mode 12-core fiber with highest core density. - Taiji Sakamoto; Shinichi Aozasa; Takayoshi Mori; Masaki Wada; Takashi Yamamoto; Saki Nozoe; Yuto Sagae; Kyozo Tsujikawa; Kazuhide Nakajima (OFC, 2017)

Crosstalk Reduction in Multi-Core Fiber Using Uniform Twist. - Shinichi Aozasa; Kyozo Tsujikawa; Taiji Sakamoto; Saki Nozoe; Kazuhide Nakajima (ECOC, 2018)

Solid Type Low-Latency Single-Mode Fiber with Large Effective Area and Low Loss. - Yuto Sagae; Takashi Matsui; Kyozo Tsujikawa; Kazuhide Nakajima (OFC, 2018)

A Review of PLC-Based Broadband Two-Mode Multi/Demultiplexer Designed by Wavefront Matching Method. - Eri Taguchi; Takeshi Fujisawa; Yoko Yamashita; Shuntaro Makino; Nobutomo Hanzawa; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Kazuhide Nakajima; Fumihiko Yamamoto; Kunimasa Saitoh (IEICE Trans. Electron., 2018)

A Broadband Mode Divider with Arbitrary Branching Ratio Based on Wavelength-Insensitive Coupler. - Misa Kudo; Takeshi Fujisawa; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Kazuhide Nakajima; Kunimasa Saitoh (OFC, 2019)

Multi-Functional Multi-Core Fiber with a Low-Latency Core and Conventional Silica Cores. - Yuto Sagae; Takashi Matsui; Yoko Yamashita; Masaki Wada; Taiji Sakamoto; Kyozo Tsujikawa; Kazuhide Nakajima (OFC, 2019)

Low-Loss and Fabrication-Tolerant Si Four-Wavelength Multiplexer using Higher-Order Mode for 100/400GbE. - Junya Takano; Takeshi Fujisawa; Takanori Sato; Yusuke Sawada; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Kazuhide Nakajima; Kunimasa Saitoh (OFC, 2019)

A Design of Low MDL Scrambling-type PLC 6-mode Multiplexer. - Motoki Shirata; Misa Kudo; Takeshi Fujisawa; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Kazuhide Nakajima; Kunimasa Saitoh (OECC/PSC, 2019)

3-Mode PLC-Based Mode Dependent Loss Equalizer in MDM Transmission. - Naoto Sugawara; Misa Kudo; Takeshi Fujisawa; Taiji Sakamoto; Takashi Matsui; Kyozo Tsujikawa; Kazuhide Nakajima; Kunimasa Saitoh (OECC/PSC, 2019)

Design of hole-assisted fiber based fiber fuse terminator considering area of melted region. - Kyozo Tsujikawa; Nobutomo Hanzawa; Kenji Kurokawa; Saki Nozoe; Takashi Matsui; Kazuhide Nakajima (OECC/PSC, 2019)

Effective Area Enlarged Photonic Crystal Fiber with Quasi-Uniform Air-Hole Structure for High Power Transmission. - Takashi Matsui; Kyozo Tsujikawa; Takehisa Okuda; Nobutomo Hanzawa; Yuto Sagae; Kazuhide Nakajima; Yasuyuki Fujiya; Kazuyuki Shiraki (IEICE Trans. Commun., 2020)