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Research Output 1989 2019

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2019

Theoretical analysis of long-haul systems adopting mode-division multiplexing

Elfiqi, A. E., Ali, A. A. I., El-Sahn, Z. A., Kato, K. & Shalaby, H. M. H., Aug 15 2019, In : Optics Communications. 445, p. 10-18 9 p.

Research output: Contribution to journalArticle

Group delay
multiplexing
Multiplexing
division
Fibers
2018
feedforward control
Feedforward control
Distributed feedback lasers
distributed feedback lasers
feedback control
feedforward control
distributed feedback lasers
feedback control
stabilization
high speed
1 Citation (Scopus)

Over 300 GHz bandwidth UTC-PD module with 600 GHz band rectangular-waveguide output

Kurokawa, T., Ishibashi, T., Shimizu, M., Kato, K. & Nagatsuma, T., May 31 2018, In : Electronics Letters. 54, 11, p. 705-706 2 p.

Research output: Contribution to journalArticle

Rectangular waveguides
Photodiodes
Bandwidth
Waveguide couplers
Waveguides

注入電流と温度の連携制御によるDFBレーザの波長安定化法の提案

Kono, S., Fukuda, H., Yamaguchi, K., Kuboki, T. & Kato, K., Mar 2018, In : 電子情報通信学会総合大会講演論文集.

Research output: Contribution to journalArticle

THz-wave phase shift measurement by THz-wave interferometer

Yamanaka, Y., Sakano, G., Haruki, J. & Kato, K., Jun 22 2017, In : Electronics Letters. 53, 13, p. 868-869 2 p.

Research output: Contribution to journalArticle

Terahertz waves
Phase shift
Interferometers
Chromatic dispersion
Phase shifters

エタロンフィルタを用いたチューナブルレーザのモードホップ検出手法 (光エレクトロニクス)

Translated title of the contribution: Etalon-filter-based mode hop detection for wavelength tunable lasers郷原誠鷹, 久保木猛 & 加藤和利, Dec 7 2017, In : IEICE technical report. 117, 339, p. 75-78 4 p.

Research output: Contribution to journalArticle

フォトミキシングと相互利得変調を用いた光-無線メディア変換技術の検討 (光エレクトロニクス)

Translated title of the contribution: Demonstration of Optical-to-Wireless Media Conversion by Using Photomixing and Cross Gain Modulation山中友輔, 久保木猛 & 加藤和利, Oct 26 2017, In : IEICE technical report. 117, 264, p. 53-56 4 p.

Research output: Contribution to journalArticle

リニアライザによるDBRレーザの波長掃引線形化とその評価

Gohara, M., Kimura, R., Yamaguchi, K., Kuboki, T. & Kato, K., Sep 2017, In : 電子情報通信学会ソサイエティ大会講演論文集.

Research output: Contribution to journalArticle

波長可変レーザにおける発振直後の光波長高速安定化 (光エレクトロニクス)

Translated title of the contribution: Prompt Stabilization of Optical Wavelength at Tunable Laser after Starting Oscillation福田浩規, 山口健太, 久保木猛 & 加藤和利, Dec 7 2017, In : IEICE technical report. 117, 339, p. 83-87 5 p.

Research output: Contribution to journalArticle

波長可変レーザ発振直後における高速波長安定化

Fukuda, H., Yamaguchi, K., Kuboki, T. & Kato, K., Sep 2017, In : 電子情報通信学会ソサイエティ大会講演論文集.

Research output: Contribution to journalArticle

非線形電圧電流特性を応用したレーザ波長掃引の線形性向上の検討

Kuboki, T., Gohara, M., Kimura, R., Yamaguchi, K. & Kato, K., Mar 2017, In : 応用物理学会秋季学術大会.

Research output: Contribution to journalArticle

2016

C-14-24 基準光とのビート信号直接計数によるDFBレーザの高精度波長安定化(C-14.マイクロ波・ミリ波フォトニクス,一般セッション)

Translated title of the contribution: C-14-24 Wavelength Stabilization of the DFB Laser by Counting the Frequency of the Beat Signal with Reference Lightwaves三井晨太郎, 坪井淳, 久保木猛 & 加藤和利, Mar 1 2016, In : 電子情報通信学会総合大会講演論文集. 2016, 1, p. 249

Research output: Contribution to journalArticle

C-14-25 波長選択フィルタを用いたマッハ・ツェンダ型二光波位相安定化法によるキャリア周波数生成(C-14.マイクロ波・ミリ波フォトニクス,一般セッション)

Translated title of the contribution: C-14-25 Carrier Frequency Generation by Mach-Zehnder Interferometric Phase Stabilization with Wavelength Selective Filter中村瞭平, 藤村勇起, 久保木猛 & 加藤和利, Mar 1 2016, In : 電子情報通信学会総合大会講演論文集. 2016, 1, p. 250

Research output: Contribution to journalArticle

C-3-2 フィードフォワード制御による光通信用DFBレーザの波長切替時間の短縮(C-3.光エレクトロニクス,一般セッション)

Translated title of the contribution: C-3-2 Reduction of Wavelength Switching time of Telecom Lasers by Feedforward Control山口健太, 立本雄大, 木村凌河, 久保木猛 & 加藤和利, Mar 1 2016, In : 電子情報通信学会総合大会講演論文集. 2016, 1, p. 140

Research output: Contribution to journalArticle

C-3-7 高精度広キャプチャレンジDFB-LD波長安定化制御(C-3.光エレクトロニクス,一般セッション)

Translated title of the contribution: C-3-7 Wavelength Stabilization of DFB-LD with High Accuracy and Wide Capture Range坪井淳, 三井晨太郎, 久保木猛 & 加藤和利, Mar 1 2016, In : 電子情報通信学会総合大会講演論文集. 2016, 1, p. 145

Research output: Contribution to journalArticle

2 Citations (Scopus)

Novel lightwave-interferometric phase detection for phase stabilization of two-tone coherent millimeter-wave/microwave carrier generation

Takeuchi, S., Sakuma, K., Kato, K., Yoshimizu, Y., Yasuda, Y., Hisatake, S. & Nagatsuma, T., Sep 1 2016, In : IEICE Transactions on Electronics. E99C, 9, p. 1048-1055 8 p.

Research output: Contribution to journalArticle

Millimeter waves
Mach number
Stabilization
Microwaves
Modulation
5 Citations (Scopus)

Performance Analysis of Multicode OCDM Networks Supporting Elastic Transmission With QoS Differentiation

Farghal, A. E. A., Shalaby, H. M. H., Kato, K. & Pokharel, R., Feb 1 2016, In : IEEE Transactions on Communications. 64, 2, p. 741-752 12 p., 7368162.

Research output: Contribution to journalArticle

Blocking probability
Multiplexing
Quality of service
Congestion control (communication)
Frequency hopping
4 Citations (Scopus)

Performance evaluation of hybrid DPSK-MPPM techniques in long-haul optical transmission

El-Fiqi, A. E., Morra, A. E., Hegazy, S. F., Shalaby, H. M. H., Kato, K. & Obayya, S. S. A., Jul 20 2016, In : Applied Optics. 55, 21, p. 5614-5622 9 p.

Research output: Contribution to journalArticle

pulse position modulation
phase shift keying
Pulse position modulation
Phase shift keying
Light transmission
1 Citation (Scopus)

Sub-microsecond wavelength stabilization of tunable lasers with the internal wavelength locker

Kimura, R., Tatsumoto, Y., Sakuma, K., Onji, H., Shimokozono, M., Ishii, H. & Kato, K., Aug 1 2016, In : Japanese Journal of Applied Physics. 55, 8, 08RB07.

Research output: Contribution to journalArticle

Laser tuning
tunable lasers
Stabilization
stabilization
Wavelength
wavelength division multiplexing
Wavelength division multiplexing
Stabilization
stabilization
grids
wavelength division multiplexing
stabilization
grids
wavelengths
microwave filters

フィードフォワード/フィードバック併用型制御の提案とこれを用いた波長可変レーザの高速波長切替の実現

Translated title of the contribution: Proposal of Feedforward/Feedback Controller and Demonstration of Prompt Wavelength Switching of the Wavelength Tunable Laser木村凌河, 立本雄大, 佐熊一輝, 恩地裕和, 久保木猛 & 加藤和利, 2016, In : 電気関係学会九州支部連合大会講演論文集. 2016, 0, p. 397-398 2 p.

Research output: Contribution to journalArticle

光導波路型デバイスの波長分散測定法の検討と波長分散変化を用いたテラヘルツ波位相調整 (マイクロ波・ミリ波フォトニクス)

Translated title of the contribution: Proposal and Demonstration of Chromatic Dispersion Measurement at Optical Waveguide Devices and Application for Controlling Phase of THz Wave山中友輔, 坂野豪紀, 春木隼, 久保木猛 & 加藤和利, Nov 14 2016, In : IEICE technical report. 116, 297, p. 51-55 5 p.

Research output: Contribution to journalArticle

2015

C-3-44 基準光とのビート信号を用いた±50MHz以内のDFBレーザの電流制御波長安定化(光モジュール,C-3.光エレクトロニクス,一般セッション)

Translated title of the contribution: C-3-44 Wavelength Stabilization by Current Control of the DFB Laser within +/- 50MHz using the Beat Signal with Reference Lightwaves坪井淳, 久保木猛 & 加藤和利, Aug 25 2015, In : 電子情報通信学会ソサイエティ大会講演論文集. 2015, 1, p. 118

Research output: Contribution to journalArticle

3 Citations (Scopus)

Optical Code-Division Multiplexing (OCDM) Networks Adopting Code-Shift Keying/Overlapping PPM Signaling: Proposal and Performance Analysis

Farghal, A. E., Shalaby, H. M. H., Kato, K. & Pokharel, R., Oct 1 2015, In : IEEE Transactions on Communications. 63, 10, p. 3779-3788 10 p., 7192599.

Research output: Contribution to journalArticle

Group velocity dispersion
Multiplexing
Pulse position modulation
Intersymbol interference
Multiple access interference
2014
2 Citations (Scopus)

Fast wavelength switching with tunable distributed amplification distributed feedback laser by feedforward control technique

Onji, H., Takeuchi, S., Tatsumoto, Y., Nunoya, N., Shimokozono, M., Ishii, H. & Kato, K., 2014, In : Japanese Journal of Applied Physics. 53, 8 SPEC. ISSUE 2, 08MB11.

Research output: Contribution to journalArticle

feedforward control
Feedforward control
Distributed feedback lasers
distributed feedback lasers
Amplification
3 Citations (Scopus)

High intrinsic modulation bandwidth InGaAsP/InGaAsP 1.55μm asymmetric active multimode interferometer laser diode by using split pump configuration

Uddin, M. N., Kizu, T., Hinokuma, Y., Hong, B., Tajima, A., Kato, K. & Hamamoto, K., Jan 1 2014, In : Japanese Journal of Applied Physics. 53, 8 SPEC. ISSUE 2, 08MB09.

Research output: Contribution to journalArticle

Interferometers
Semiconductor lasers
interferometers
semiconductor lasers
Modulation
6 Citations (Scopus)

Split pump region in 1.55 μm InGaAsP/InGaAsP asymmetric active multi-mode interferometer laser diode for improved modulation bandwidth

Nasir Uddin, M., Kizu, T., Hinokuma, Y., Tanabe, K., Tajima, A., Kato, K. & Hamamoto, K., Jan 1 2014, In : IEICE Transactions on Electronics. E97-C, 7, p. 781-786 6 p.

Research output: Contribution to journalArticle

Interferometers
Semiconductor lasers
Modulation
Pumps
Bandwidth
2011
51 Citations (Scopus)

New beam scanning model for high-speed operation using KTa 1-xNbxO3 crystals

Miyazu, J., Imai, T., Toyoda, S., Sasaura, M., Yagi, S., Kato, K., Sasaki, Y. & Fujiura, K., Nov 2011, In : Applied Physics Express. 4, 11, 111501.

Research output: Contribution to journalArticle

high speed
Electrooptical effects
Scanning
Crystals
electro-optics
2 Citations (Scopus)

Optically injection-locked photonic crystal laser with >67GHz modulation bandwidth

Chen, C. H., Takeda, K., Shinya, A., Nozaki, K., Sato, T., Notomi, M., Kato, K. & Matsuo, S., Oct 27 2011, In : Electronics Letters. 47, 22, p. 1240-1241 2 p.

Research output: Contribution to journalArticle

Photonic crystals
Modulation
Bandwidth
Lasers
Heterojunctions
2008
12 Citations (Scopus)

10.3Gbit/s burst-mode PIN-TIA module with high sensitivity, wide dynamic range and quick response

Nishihara, S., Nakamura, M., Nishimura, K., Kishine, K., Kimura, S. & Kato, K., Feb 7 2008, In : Electronics Letters. 44, 3, p. 222-223 2 p.

Research output: Contribution to journalArticle

BiCMOS technology
16 Citations (Scopus)

140-nm quasi-continuous fast sweep using SSG-DBR lasers

Fujiwara, N., Yoshimura, R., Kato, K., Ishii, H., Kano, F., Kawaguchi, Y., Kondo, Y., Ohbayashi, K. & Oohashi, H., Jun 15 2008, In : IEEE Photonics Technology Letters. 20, 12, p. 1015-1017 3 p.

Research output: Contribution to journalArticle

DBR lasers
gratings
Wavelength
wavelengths
compensators
43 Citations (Scopus)

A burst-mode 3R receiver for 10-Gbit/s PON systems with high sensitivity, wide dynamic range, and fast response

Nishihara, S., Kimura, S., Yoshida, T., Nakamura, M., Terada, J., Nishimura, K., Kishine, K., Kato, K., Ohtomo, Y., Yoshimoto, N., Imai, T. & Tsubokawa, M., Jan 1 2008, In : Journal of Lightwave Technology. 26, 1, p. 99-107 9 p.

Research output: Contribution to journalArticle

Passive optical networks
dynamic range
bursts
receivers
sensitivity

Highly Stable 1.3-μm-Wavelength Lasers With p- and n-InP Buried Heterostructure

Takeshita, T., Ito, T., Sugo, M. & Kato, K., Jan 1 2008, In : IEEE Transactions on Device and Materials Reliability. 8, 3, p. 576-581 6 p.

Research output: Contribution to journalArticle

Heterojunctions
Wavelength
Deterioration
Lasers
Degradation
31 Citations (Scopus)

Improved resonance characteristics of GaAs beam resonators by epitaxially induced strain

Yamaguchi, H., Kato, K., Nakai, Y., Onomitsu, K., Warisawa, S. & Ishihara, S., Jul 4 2008, In : Applied Physics Letters. 92, 25, 251913.

Research output: Contribution to journalArticle

resonators
resonant frequencies
Q factors
buffers
3 Citations (Scopus)

Optical-beam-induced-current analysis of wear-out degradation in high-reliability Fabry-Perot laser diodes for access networks

Ito, T., Takeshita, T., Sugo, M., Kurosaki, T., Akatsu, Y. & Kato, K., Jun 13 2008, In : Japanese Journal of Applied Physics. 47, 6 PART 1, p. 4523-4526 4 p.

Research output: Contribution to journalArticle

Induced currents
Semiconductor lasers
semiconductor lasers
Wear of materials
degradation
2007
7 Citations (Scopus)

Analysis of wear-out degradation of a DFB laser using an optical-beam-induced current monitor

Takeshita, T., Yamamoto, M., Iga, R., Sugo, M., Kondo, Y. & Kato, K., Aug 1 2007, In : IEEE Transactions on Electron Devices. 54, 8, p. 1852-1859 8 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
Induced currents
Wear of materials
Degradation
Electric current measurement
4 Citations (Scopus)

Degradation analysis of 2-μm DFB laser using optical beam-induced current technique

Takeshita, T., Sato, T., Mitsuhara, M., Kondo, Y., Sugo, M. & Kato, K., Oct 1 2007, In : IEEE Transactions on Electron Devices. 54, 10, p. 2644-2649 6 p.

Research output: Contribution to journalArticle

Distributed feedback lasers
Induced currents
Degradation
Epitaxial layers
Heterojunctions
8 Citations (Scopus)

Development of TO-BOSA for FTTH using new optical path alignment technique

Ohki, A., Fukushima, S., Sugo, M., Kato, K. & Akatsu, Y., Apr 8 2007, In : Electronics Letters. 43, 6, p. 358-359 2 p.

Research output: Contribution to journalArticle

Costs
Fiber to the x
9 Citations (Scopus)

High sensitivity APD burst-mode receiver for 10Gbit/s TDM-PON system

Nakanishi, T., Suzuki, K. I., Fukada, Y., Yoshimoto, N., Nakamura, M., Kato, K., Nishimura, K., Ohtomo, Y. & Tsubokawa, M., Oct 10 2007, In : IEICE Electronics Express. 4, 19, p. 588-592 5 p.

Research output: Contribution to journalArticle

pamidronate
Passive optical networks
Time division multiplexing
budgets
bursts
2006
Semiconductor optical amplifiers
Ablation
light amplifiers
ablation
flat surfaces
2003
18 Citations (Scopus)

Flat and high responsivity CWDM photoreceiver using silica-based AWG with multimode output waveguides

Doi, Y., Ishii, M., Kamei, S., Ogawa, I., Mino, S., Shibata, T., Hida, Y., Kitagawa, T. & Kato, K., Nov 22 2003, In : Electronics Letters. 39, 22, p. 1603-1604 2 p.

Research output: Contribution to journalArticle

Arrayed waveguide gratings
Wavelength division multiplexing
Waveguides
Silica
Fabrication
2001
5 Citations (Scopus)

Hybrid integrated eight-channel multi-wavelength photoreceiver consisting of refracting-facet photodiodes on arrayed waveguide grating demultiplexer

Ohyama, T., Yamada, T., Akahori, Y., Kaneko, A., Sugita, A. & Kato, K., Jan 4 2001, In : Electronics Letters. 37, 1, p. 48-49 2 p.

Research output: Contribution to journalArticle

Hybrid integrated circuits
Arrayed waveguide gratings
Photodiodes
Wavelength
Insertion losses