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    • 4. 发明授权
    • Laser thermal tuning
    • 激光热调
    • US06795453B2
    • 2004-09-21
    • US10000141
    • 2001-10-30
    • Bardia PezeshkiEd VailGideon Yoffe
    • Bardia PezeshkiEd VailGideon Yoffe
    • H01S310
    • H01S5/4031H01S5/02453H01S5/02461H01S5/0261H01S5/0425H01S5/0612H01S5/06825H01S5/4087
    • A multi-wavelength laser array where each element can be individually heated for fine tuning. The wavelength of the array can be coarsely tuned by selecting one laser of a particular wavelength for the array, and then applying a heating current to fine-tune the wavelength. The lasers can be phase shifted DFBs for high single-mode yield. The heating can be performed monolithic to the device by passing current longitudinally through the p-type stripe, while the injection current passes vertically through the stripe. Alternatively an adjacent laser to the one selected can be activated, though not fiber coupled, such that the thermal load is sufficient to tune the selected laser. Thin film heaters placed on top or adjacent to the cavity can also be used. To minimize continuous power consumption, the on-chip heater can be used initially to tune the laser while the TE cooler responds on a slower time scale.
    • 多波长激光器阵列,其中每个元件可以单独加热以进行微调。 可以通过选择阵列的特定波长的一个激光器,然后施加加热电流来微调波长,来粗调阵列的波长。 激光器可以是相移DFB以获得高单模产量。 通过将电流纵向通过p型条纹,同时注射电流垂直通过条纹,可以对器件进行单片式加热。 或者,所选择的相邻激光器可以被激活,尽管不是光纤耦合的,使得热负载足以调谐所选择的激光。 也可以使用放置在空腔的顶部或邻近的薄膜加热器。 为了最大限度地减少连续功耗,片上加热器最初可用于调谐激光器,而TE冷却器以较慢的时间尺度进行响应。