1.55μm帯40Gbit/s-InGaAlAs EA変調器の無温調動作の検討(超高速・大容量光伝送処理,デバイス技術,及び一般)  [in Japanese] Uncooled operation of a 1.55-μm, 40-Gbit/s InGaAlAs EA modulator  [in Japanese]

Abstract

光送信器の低コスト化を目指したアンクールド40Gbit/s EA/DFBレーザを実現するための基礎検討として、0℃-85℃の広い温度範囲でInGaAlAs多重量子井戸を吸収層として持つ1.55μm帯EA変調器の40Gbit/s変調実験を行った。各温度で離長量が一定になる波長の光を入力した場合、65℃でも、25℃の場合と比較し動的消光比が約1.6dB劣化するものの、良好な40Gbit/s変調波形を観測した。また、各温度でDFBレーザの温度特性に従った波長の光を入力した場合も、適切なバイアスを印加することにより0℃-85℃の広い温度範囲で動的消光比7.8dB以上の良好な波形を確認した。これらは、現状のEA変調器がアンクールドEA/DFBレーザ-適用可能であることを示す結果である。

We demonstrated 40-Gbit/s operations of 1. 55-fom InGaAlAs multiple-quantum-well (MQW) electro-absorption (EA) modulators in wide temperature range from 0 to 85-C as a basic study of an uncooled EA/DFB (distributed feedback) laser, which is one of the most promising method to achieve a low-cost optical transmitter. When the wavelength of the input optical source is set to keep the detuning constant, a good dynamic extinction ratio (ER) of 8.5 dB was obtained even at high temperature, i.e., 65℃, and the dynamic ER degradation between 25 and 65℃ was only 1.6 dB. When the input optical wavelength is controlled to match the temperature sensitivity of a DFB laser, the dynamic ER was better than 7.8 dB hi the temperature range from 0 to 85℃ by adjusting the center-level voltage of the EA modulator. These results show that when our 40-Gbit/s EA modulator is monolithically integrated with a DFB laser, it can attain uncooled operations under wide temperature range from 0 to 85℃.

Journal

Technical report of IEICE. LQE   [List of Volumes]

Technical report of IEICE. LQE 104(414), 43-46, 2004-10-28  [Table of Contents]

The Institute of Electronics, Information and Communication Engineers

References:  4

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Codes

  • NII Article ID (NAID) :
    110003308922
  • NII NACSIS-CAT ID (NCID) :
    AN10442705
  • Text Lang :
    JPN
  • Article Type :
    ART
  • ISSN :
    09135685
  • NDL Article ID :
    7188086
  • NDL Source Classification :
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No. :
    Z16-940
  • Databases :
    CJP  NDL  NII-ELS 

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