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CW light output power as high as 38 mW at room temperature and with a CW operable temperature as high as 80°C, both under single-longitudinal-mode operation, has been achieved for the first time in newly developed 1.3 μm distributed-feedback (DFB) laser diodes with a double-channel planar buried heterostructure (DC-PBH).
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Kitamura et al. (1983) studied this question.
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