Desing of High Slope-Efficiency Phase-Shifted DFB Laser Diodes with Asymmetrically-Pitch-Modulated(APM) Gratings(Special Issue on Advanced Optical Devices for Next Generation Photonic Networks)

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概要

• 論文の詳細を見る

• A theoretical study on high slope-efficiency phase-shifted DFB laser diodes is presented. We have proposed a new grating structure called asymmetrically-pitch-modulated(APM) grating, and calculated its slope-efficiency and single-mode-yield. In order to take into account the modulated grating period;we have developed an F-matrix which directly includes a chirped grating structure. APM phase-shifted DFB laser diodes consist of a uniform grating in one half section of the cavity and a chirped grating in the other half. This structure causes asymmetrical field distribution inside the cavity and the optical output power from one facet is larger than that from the other facet. According to the simulation results, when the normalized coupling coefficient κL is 3.0, the front-to-rear output power ratio is 2.6, while the single-mode-yield remains at 100%, and simultaneously the slope-efficiency improvement becomes 65% better than that of ordinary quarter-wave phase-shifted DFB lasers of the same κL value.

• 社団法人電子情報通信学会の論文
• 2000-06-25

著者

• Sato K

  Tokyo Univ. Agriculture And Technol. Tokyo Jpn

• Sato K

  Advanced Mobile Telecommunication Technology Inc.

• SATO Koichi

  Niigata University

• Sato K

  National Inst. Health Sci. Tokyo Jpn

• Sato K

  Ntt Network Innovation Laboratories

• Sato K

  Ykc Corp. Musashimurayama‐shi Jpn

• SATO Kenji

  The authors are with Kansai Electronics Research Laboratory, NEC Corp.

• MUROYA Yoshiharu

  The authors are with Kansai Electronics Research Laboratory, NEC Corp.

• OKUDA Tetsuro

  The authors are with Kansai Electronics Research Laboratory, NEC Corp.

• Okuda T

  The Authors Are With Kansai Electronics Research Laboratory Nec Corp.

• Sato K

  Kyoritsu University Of Pharmacy

• Muroya Yoshiharu

  The Authors Are With Kansai Electronics Research Laboratory Nec Corp.

• Sato Kenji

  The Authors Are With Central R & D Laboratory Japan Energy Co. Ltd.

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