H. Watanabe, K. Shibata, T. Aoyagi, T. Takiguchi, H. Higuchi, M. Aiga
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引用次数: 0
摘要
我们明确了高温下线性度退化的机制，并成功实现了低畸变1.3 /spl μ m DFB激光器在宽温度范围内工作。这些激光器可以应用于双向有线电视分配系统没有任何冷却器。发现载流子溢出是决定高温下畸变的主要因素。在78通道CSO测量中，具有低泄漏电流的器件在65/spl度/C下实现了低于-50 dBc的低失真。
Wide-temperature-range operation of 1.3 /spl mu/m DFB lasers with low distortion for analog transmission
We have clarified a mechanism for the degradation of linearity at high temperature, and successfully realized low-distortion 1.3 /spl mu/m DFB lasers operating over a wide-temperature-range. Those lasers can be applied to bi-directional CATV distribution systems without any coolers. A carrier overflow is found to be a dominant factor determining the distortion at high temperatures. Devices with low leakage current have realized low distortion less than -50 dBc at 65/spl deg/C in 78-channel CSO measurements.
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