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Distributed-feedback GaInAsP/InP lasers with a low threshold current emitting at 1.3 Â¿m have been successfully fabricated. A minimum CW threshold current of 66 mA was obtained at room temperature. The temperature coefficient of lasing wavelength was 1 Ã /Â°C, which is about a fifth of that for Fabry-Perot lasers. A stable single longitudinal mode was obtained up to 52Â°C in a p-side-up configuration.