【摘要】 报道了采用选区外延生长技术制作的可实用的单脊条形电吸收调制DFB激光器。激光器的阈值为 2 6mA ,最大光功率可达 9mW ,消光比可达 16dB。减小端面的光反馈后 ,从自发发射谱上观察不到波长随调制电压的变化 ,调制器部分的电容为 1 5pF ,初步筛选结果显示阈值、隔离电阻、消光比基本没有变化 ,可应用在 2 5Gb/s的长途干线光纤传输系统上。更多还原

【Abstract】 The monolithic single ridge stripe electroabsorption modulated DFB laser (EML′s) fabricated by selective area LP-MOVPE is reported. The threshold current of the EML′s is 26 mA; the maximum output power is about 9 mW; the extinction ratio is more than 16 dB; no wavelength shift with modulator bias is observed from the ASE spectrum after the optical feedback being reduced; the capacitance of the modulator part is 1.5 pF. No obvious changes of threshold current, isolation resistance and extinction ratio are observed after the preliminary aging test. The EML′s can be used in the 2.5 Gb/s long haul fiber communication systems.更多还原