1996 Fiscal Year Annual Research Report

利得結合分布帰還型半導体レーザに基づく光集積回路の共同研究

Research Project

Project/Area Number	08044123
Research Institution	The University of Tokyo
Principal Investigator	中野義昭東京大学, 工学系研究科, 助教授 (50183885)
Co-Investigator(Kenkyū-buntansha)	須藤剣日本学術振興会, 特別研究員モルティエルヘールトゲント大学, 情報工学研究所, 助手バーツルルゲント大学, 情報工学研究所, 助教授羅毅清華大学, 電子工程系, 教授スミットマイント K デルフト工科大学, 電気工学科, 教授コルドレンラリーA. カリフォルニア大学, サイタバーバラ校・光エレクトロニクス技術センター, 所長教授多田邦雄東京大学, 工学系研究科, 教授 (00010710)
Keywords	利得結合 / 分布帰還型レーザ / 半導体レーザ / DFBレーザ / パワメータ抽出 / ダンピングファクタ / 変調歪み / 波長トリミング
Research Abstract	1.利得結合計数の測定抽出:利得結合(GC)分布帰還型(DFB)半導体レーザの大きな問題点は,実素子における利得結合計数の測定法が欠如していたことである。本研究では,発振閾値に達する前のASE(amplified spontaneous emission)スペクトラムに理論スペクトラムをフィッティングする新しいパラメータ抽出法を確立し,利得結合係数の測定抽出を世界で始めて可能にした.これを用いて,吸収回折格子型GCDFBレーザで,利得結合係数が注入電流とともに変化するという理論的予測を,初めて実験的に証明した。2.小信号直接変調特性:GCDFBレーザの小信号高速直接変調特性は,吸収性回折格子の可飽和吸収に起因して,特異になることが予測される.本研究では,GCDFBレーザの小信号直接変調を実際に行い,緩和振動周波数と緩和振動ダンピングファクタを抽出した。その結果,GCDFBレーザのダンピングファクタは通常と異なり,光出力とともに低下する領域の存在することが確認された。これを利用すれば、小信号変調帯域を,通常のDFBレーザに比べ拡大することができる.3.アナログ変調歪み解析:サブキャリア多重(SCM)光ファイバ通信においては,変調特性に非常に厳しい線型性が要求される.本研究では,GCDFBレーザのアナログ変調歪みを理論解析し,同レーザでは空間ホールバーニングが小さいことに起因して,従来のDFBレーザに比べ2次高調波歪み,3次高調波歪みとも10dB程度低いことを明らかにした.4.その他の成果:上記以外に,1.55μm帯吸収性回折格子GCDFBレーザの開発,同レーザの反射戻り光誘起雑音の解析と評価,波長可変DFBC構造の検討,波長多重光通信に向けた発振波長トリミング概念の提案と実証,GCDFBレーザトライオードの試作,などを行って所期の成果を得た.

Research Products
(18 results)

All Other

All Publications (18 results)

[Publications] Martin Bouda: "Can photonic switching systems benefit from monolithic integration of semiconfuctor optoelectronic devices?" Tech.Digest International Topical Meeting on Photonics in Switching (PS'96). PWC20. 124-125 (1996)
[Publications] Yi Luo: "Anovel monolithically integrated device composed of MQW GaAlAs/GaAs gain-coupled DFB laser and electro-absorption modulator" Chinese Jounal of Semiconductors. 17・5. 347-352 (1996)
[Publications] Yoshiaki Nakano: "(Invited paper) Recent progress in semiconductor gain-coupled DFB laser research" Tech.Digest Conf.on lasers and Electro-Optics (CLEO'96). CTuC1. 76-77 (1996)
[Publications] Tomoaki Toda: "Anomalous small signal modulation response in gain-coupled DFB lasers with absorptive gratings" Tech.Digest First Optoelectronics and Communications Conf.(OECC'96). 6D2-3. 74-75 (1996)
[Publications] Geert Morthier: "Enhanced performance of DFB lasers for analog communication systems by the introduction of gain coupling" Tech.Digest First Optoelectronics and Communications Conf.(OECC'96). 189-32. 484-485 (1996)
[Publications] Tsurugi K.Sudoh: "Wavelength trimming technology for multiple-wavelength distributed-feedback laser arrays by photo-absorption induced disordering" Tech.Digest (post-Deadline Papers),First optoelectronics and Communications Conf.(OECC'96). PD2-2. 18-19 (1996)
[Publications] Yi Luo: "Fabrication of gain-coupled DFB Semiconductor laser and its integration with electroabsorption modulator" Tech.Digest,25th General Assembly of the International Union of Radio Science. D7・7. 192- (1996)
[Publications] 須藤剣: "分布帰還型半導体レーザの波長トリミング技術" 電子情報通信学会論文誌. J79-C-1・10. 400-401 (1996)
[Publications] Tsurugi K.Sudoh: "Wavelength trimming technology for multiple-wavelength distributed-feedback laser arrays" Conf.Digest,15th IEEE International Semiconductor Laser Conf.W1・5. 133-134 (1996)
[Publications] Yoshiaki Nakano: "(Invited paper) Semiconductor photonic devices and their integration" proc.of photonics Conference. II-1. 3-4 (1996)
[Publications] Tsurugi K.Sudoh: "Wavelength trimming of distributed-feedback lasers by photo-absorption-induced disordering" Conf.proc.,IEEE Lasers and Electro-Optics Society Annual Meeting (LEOS'96). Thu4. 419-420 (1996)
[Publications] Tsurugi K.Sudoh: "Wavelength trimming technology for multiple-wavelength distributed-feedback laser arrays by photo-induced refractive index change" To be published in Electronics Letters.(1997)
[Publications] Tsurugi K.Sudoh: "Wavelength trimming by photo-absorption induced disordering for multiple-wavelength distributed-feedback laser arrays" to be published in IEEE photon.Tech.Letters. (1997)
[Publications] Martin Bouda: "Extremely large in-plane bandgap shifts by MOVPE selective area growth using TBA and TBP" to be published in Tech.Digest,Eighth European Conf.on Integrated Optics (ECIO'97). EThHI. (1997)
[Publications] Martin Bouda: "Wide-angle Coupling to multi-mode interference devices-a novel concept for compacting photonic integrated circuits" to be published in IEICE Trans.on Electronics. E80-C・5. (1997)
[Publications] Masaki Funabashi: "Comparison of In GaAs absorptive grating structures in 1.55μm In GaAsP/InP strained MQW gain-coupled DFB lasers" to be published in Conf.proc.,Ninth International Conf.on Indium Phosphide and Related Materials (IPRM'97). TuP6. (1997)
[Publications] Toru Nakura: "First observation of changing coupling coefficients in a gain-coupled DFB laser with absorptive grating by automatic parameter extraction from sub-threshold spectra" to be published in Tech.Digest.Conf.on lasers and Electro-Optics(CLEO'97). CThM1. (1997)
[Publications] Yi Luo: "Analysis of gain and index coupling coefficients of DFB semiconductor lasers using a practical model" to be published in International Journal of Optoelectronics. (1997)

1996 Fiscal Year Annual Research Report

利得結合分布帰還型半導体レーザに基づく光集積回路の共同研究

Principal Investigator

中野 義昭 東京大学, 工学系研究科, 助教授 (50183885)

Research Products

[Publications] Martin Bouda: "Can photonic switching systems benefit from monolithic integration of semiconfuctor optoelectronic devices?" Tech.Digest International Topical Meeting on Photonics in Switching (PS'96). PWC20. 124-125 (1996)

[Publications] Yi Luo: "Anovel monolithically integrated device composed of MQW GaAlAs/GaAs gain-coupled DFB laser and electro-absorption modulator" Chinese Jounal of Semiconductors. 17・5. 347-352 (1996)

[Publications] Yoshiaki Nakano: "(Invited paper) Recent progress in semiconductor gain-coupled DFB laser research" Tech.Digest Conf.on lasers and Electro-Optics (CLEO'96). CTuC1. 76-77 (1996)

[Publications] Tomoaki Toda: "Anomalous small signal modulation response in gain-coupled DFB lasers with absorptive gratings" Tech.Digest First Optoelectronics and Communications Conf.(OECC'96). 6D2-3. 74-75 (1996)

[Publications] Geert Morthier: "Enhanced performance of DFB lasers for analog communication systems by the introduction of gain coupling" Tech.Digest First Optoelectronics and Communications Conf.(OECC'96). 189-32. 484-485 (1996)

[Publications] Tsurugi K.Sudoh: "Wavelength trimming technology for multiple-wavelength distributed-feedback laser arrays by photo-absorption induced disordering" Tech.Digest (post-Deadline Papers),First optoelectronics and Communications Conf.(OECC'96). PD2-2. 18-19 (1996)

[Publications] Yi Luo: "Fabrication of gain-coupled DFB Semiconductor laser and its integration with electroabsorption modulator" Tech.Digest,25th General Assembly of the International Union of Radio Science. D7・7. 192- (1996)

[Publications] 須藤 剣: "分布帰還型半導体レーザの波長トリミング技術" 電子情報通信学会論文誌. J79-C-1・10. 400-401 (1996)

[Publications] Tsurugi K.Sudoh: "Wavelength trimming technology for multiple-wavelength distributed-feedback laser arrays" Conf.Digest,15th IEEE International Semiconductor Laser Conf.W1・5. 133-134 (1996)

[Publications] Yoshiaki Nakano: "(Invited paper) Semiconductor photonic devices and their integration" proc.of photonics Conference. II-1. 3-4 (1996)

[Publications] Tsurugi K.Sudoh: "Wavelength trimming of distributed-feedback lasers by photo-absorption-induced disordering" Conf.proc.,IEEE Lasers and Electro-Optics Society Annual Meeting (LEOS'96). Thu4. 419-420 (1996)

[Publications] Tsurugi K.Sudoh: "Wavelength trimming technology for multiple-wavelength distributed-feedback laser arrays by photo-induced refractive index change" To be published in Electronics Letters.(1997)

[Publications] Tsurugi K.Sudoh: "Wavelength trimming by photo-absorption induced disordering for multiple-wavelength distributed-feedback laser arrays" to be published in IEEE photon.Tech.Letters. (1997)

[Publications] Martin Bouda: "Extremely large in-plane bandgap shifts by MOVPE selective area growth using TBA and TBP" to be published in Tech.Digest,Eighth European Conf.on Integrated Optics (ECIO'97). EThHI. (1997)

[Publications] Martin Bouda: "Wide-angle Coupling to multi-mode interference devices-a novel concept for compacting photonic integrated circuits" to be published in IEICE Trans.on Electronics. E80-C・5. (1997)

[Publications] Masaki Funabashi: "Comparison of In GaAs absorptive grating structures in 1.55μm In GaAsP/InP strained MQW gain-coupled DFB lasers" to be published in Conf.proc.,Ninth International Conf.on Indium Phosphide and Related Materials (IPRM'97). TuP6. (1997)

[Publications] Toru Nakura: "First observation of changing coupling coefficients in a gain-coupled DFB laser with absorptive grating by automatic parameter extraction from sub-threshold spectra" to be published in Tech.Digest.Conf.on lasers and Electro-Optics(CLEO'97). CThM1. (1997)

[Publications] Yi Luo: "Analysis of gain and index coupling coefficients of DFB semiconductor lasers using a practical model" to be published in International Journal of Optoelectronics. (1997)

中野義昭東京大学, 工学系研究科, 助教授 (50183885)

[Publications] 須藤剣: "分布帰還型半導体レーザの波長トリミング技術" 電子情報通信学会論文誌. J79-C-1・10. 400-401 (1996)