Highly Reliable and High Power 980 nm Pump Laser Diode Module for Undersea Cable Systems (Joint Special Issue on Recent Progress in Optoelectronics and Communications)

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概要

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• Highly reliable and high power weakly index guided buried-stripe type 980 nm pump laser diodes developed for undersea applications are reviewed. The 10,000-hour large scale reliability tests of the first generation LD chips shows that 16.7 FIT for the random failure was confirmed at 10℃ with 60% confidence level at 120 mW output power. We also fabricated a FBG locked co-axial type module using a can-sealed LD with a two-lens system, which showed a stable FBG locked mode oscil-Ration at 980 nm under the temperature range from 5℃ to 45℃. The 5,000 hour heat cycle test of the modules reveals that the cumulative failure rate after 27 years at 10℃ is expected to be 0.023%. These first generation LD modules were employed in the transoceanic commercial systems such as Pacific Crossing-1 and the Japan-US cable system projects. We have also succeeded indeveloping the 980 nm LD for higher output operation with optimizing waveguide design. The 1000 μm long LD showed CW kink-free operation up to 545 mW optical output and a maximum output power of over 650 mW, which was limited by thermal rollover. In addition, a preliminary aging test at 350 mW optical output power at 50℃ has shown stable operation up to 2,300 h. We also confirmed 300 mW kink-free fiber output power with a co-axial type module with the improved coupling efficiency of approximately 78%. These figures are the highest reported operation levels for 980-nm co-axial type modules.

• 社団法人電子情報通信学会の論文
• 2001-05-01

著者

• Kaneda Hideaki

  Opto-electronics Research And Technology Development Center Mitsubishi Chemical Corporation

• USAMI Masashi

  KDDI R&D Laboratories

• MATSUSHIMA Yuichi

  KDDI R&D Laboratories

• HORIE Hideyoshi

  Opto-Electronics Research and Technology Development Center, Mitsubishi Chemical Corporation

• Usami M

  Kddi R&d Laboratories Inc.:optical Industry And Technology Development Association

• Usami Masashi

  Kddi R&d Laboratories Inc.:optoelectronic Industry And Technology Development Association

• Matsushima Yusuke

  System Devices And Fundamental Research Silicon Systems Research Laboratories Nec Corporation

• Horie H

  Opto-electronics Research And Technology Development Center Mitsubishi Chemical Corporation

• Horie Hideyoshi

  Opto-electronics Research And Technology Development Center Mitsubishi Chemical Corporation

• Usami Masashi

  KDDI R&D Laboratories Inc.:Optical Industry and Technology Development Association

• Matsushima Yuichi

  KDDI R&D Laboratories Inc.

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• Highly Reliable and High Power 980 nm Pump Laser Diode Module for Undersea Cable Systems (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
• Highly Reliable and High Power 980 nm Pump Laser Diode Module for Undersea Cable Systems (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
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