"Saeed Mahmud ULLAH,SeungHun Lee,Ryo Suemitsu,Nobuhiko Nishiyama,SHIGEHISA ARAI","GaInAsP/InP Distributed Reflector Lasers and Integration of Front Power Monitor by Using Lateral Quantum Confinement Effect",,"Jpn. J. Appl. Phys.",,"Vol. 47","No. 6","pp. 4558-4565",2008,June
"S.H. Lee,S. M. Ullah,T. Shindo,K. Davis,N. Nishiyama,S. Arai","Bit-Error-Rate Measurement of GaInAsP/InP Distributed Reflector Laser with Wirelike Active Regions","The 20th International Conference on Indium Phosphide and Related Materials (IPRM2008)","Digest of IPRM2008",,,"no. MoA2-3",,2008,May
"李承勲,Saeed Mahmud Ullah,進藤隆彦,Kyle Spencer Davis,西山伸彦,荒井滋久","細線状活性層を有する分布反射型レーザの直接変調特性","電子情報通信学会 2008年総合大会","電子情報通信学会 2008年総合大会","電子情報通信学会","Vol. 北九州","no. C-4-29",,2008,Mar.
"SHIGEHISA ARAI,SAEED MAHMUD ULLAH,SeungHun Lee,PDHANORM,Munetaka Kurokawa,Shinichi Sakamoto,Hideyuki Naitoh,Tadashi Okumura,Takeo Maruyama,Nobuhiko Nishiyama","GaInAsP/InP Distributed Feedback and Distributed Reflector Lasers with Fine Wirelike Active Regions","Photonics WEST Optoelectronics 2008","OPTO2008 (part of SPIE Photonics West 2008)","SPIE","Vol. Photonics WEST Optoelectronics 2008","No. San Jose (USA)","pp. 6902-04",2008,Jan.
"D. Plumwongrot,Y. Nishimoto,S. M. Ullah,Y. Tamura,M. Kurokawa,T. Maruyama,N. Nishiyama,S. Arai","Bragg Wavelength Detuning in GaInAsP/InP Distributed Feedback Lasers with Wirelike Active Regions",,"Jpn. J. Appl. Phys.",,"vol. 46","no. 45","pp. L1090-L1092",2007,Nov.
"S. M. Ullah,R. Suemitsu,S.H. Lee,Makoto Otake,N. Nishiyama,S. Arai","Low-Threshold-Current Operation of High-Mesa Stripe Distributed Reflector Laser Emitting at 1540nm",,"Jpn. J. Appl. Phys.",,"vol. 46","no. 44","pp. L1068-L1070",2007,Nov.
"S.H. Lee,R. Suemitsu,S. M. Ullah,Makoto Otake,N. Nishiyama,S. Arai","Very High Electric Isolation Resistance between Distributed Reflector Laser and Front Power Monitor through Deeply Etched Narrow Groove",,"Jpn. J. Appl. Phys.",,"vol. 46","no. 39","pp. L954-L956",2007,Oct.
"R. Suemitsu,S. M. Ullah,S. H. Lee,M. Otake,N. Nishiyama,S. Arai","Integration of Front Power Monitor with Distributed Reflector Laser through Deep Etched Narrow Groove Isolation","The 19th International Conference on Indium Phosphide and Related Materials (IPRM2007)","The 19th International Conference on Indium Phosphide and Related Materials (IPRM2007)",,"Vol. Matsue (Japan)","no. TuB2-5","pp. 47-50",2007,May
"S. M. Ullah,R. Suemitsu,S. H. Lee,M. Otake,N. Nishiyama,S. Arai","Sub milliampere operation of 1540 nm wavelength Distributed Reflector Laser with Wirelike Active Regions","The 19th International Conference on Indium Phosphide and Related Materials (IPRM2007)","The 19th International Conference on Indium Phosphide and Related Materials (IPRM2007)",,"Vol. Matsue (Japan)","no. ThB2-1","pp. 506-509",2007,May
"S. M. ウラー,末光 涼,李 承勲,西本頼史,大武誠人,西山伸彦,荒井滋久","細線状活性層の線幅変調による電界吸収変調器集積DRレーザ","第54回応用物理学関係連合講演会","第54回応用物理学関係連合講演会",,"Vol. 神奈川","no. 28p-SG-14","p. 1226",2007,Mar.
"末光 涼,S. M. ウラー,李 承勲,西本頼史,大武誠人,西山伸彦,荒井滋久","深い極微溝による電気的分離を利用したDRレーザ前端面へのパワーモニターの集積","第54回応用物理学関係連合講演会","第54回応用物理学関係連合講演会",,"Vol. 神奈川","No. 28p-SG-15","pp. 1226",2007,Mar.
"Saeed Mahmud ULLAH,Ryo SUEMITSU,SeungHun Lee,Masato OTAKE,Nobuhiko nishiyama,SHIGEHISA ARAI","Low threshold current DR laser with wirelike active regions and integration of EAM with high electrical isolation","電子情報通信学会 レーザ・量子エレクトロニクス研究会",,,"Vol. LQE2006-114",,"pp. 61-65",2006,Dec.
"SAEED MAHMUD ULLAH,Ryo Suemitsu,SeungHun Lee,SHIGEHISA ARAI","A Low Threshold Current Operation of Distributed Reflector (DR) Laser","第67回応用物理学会学術講演会",,,"Vol. 29a-ZT-10",,"pp. Digest III -p. 1048",2006,Aug.
"SeungHun Lee,Saeed Mahmud ULLAH,Ryo Suemitsu,Shigehisa ARAI","Threshold Current Reduction of Distributed Reflector (DR) Laser after Antireflection Coating","第67回応用物理学会学術講演会",,,"Vol. 29a-ZT-9",,"pp. Digest III -p. 1047",2006,Aug.
"S. M. Ullah,S. H. Lee,R. Suemitsu,K. Ohira,S. Arai","Improved performance of Distributed-Reflector Laser  with Antireflection Coating","The 18th Indium Phosphide and Related Materials Conference (IPRM2006)",,,"Vol. WP-25",,,2006,May