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    • 5. 发明授权
    • Thermally tunable optical devices
    • 热可调光学器件
    • US06411746B1
    • 2002-06-25
    • US09484491
    • 2000-01-18
    • Darol ChamberlainGang ChenSteven B. DawesPeter J. McNeillyMike X. OuyangLaura A. Weller-Brophy
    • Darol ChamberlainGang ChenSteven B. DawesPeter J. McNeillyMike X. OuyangLaura A. Weller-Brophy
    • G02F1035
    • G02F1/0147G02F1/0115G02F2201/307G05D23/24
    • The present invention relates to a tunable optical device 10 that includes an optical fiber device 12 having optical properties that vary with temperature and a heater 14. The heater 14 is thermally coupled to the optical fiber device 12. The heater 14 includes a metal layer 18 and two electrical contacts 20, 22 that are electrically connected to the metal layer 18. The electrical contacts 20, 22 are spaced apart from one another along the metal layer 18. The electrical resistance of the portion of the metal layer 18 between the contacts 20, 22 varies with temperature and serves as a resistive heater. The invention also includes a controller 16 that is electrically connected to the heater 14. The controller 16 provides electrical power to the heater 14 and measures the electrical voltage across the heater 14. The controller 16 compares the measured electrical voltage to a pre-selected reference value. The controller then regulates the amount of electrical current supplied to the heater 14. By regulating the amount of electrical current supplied to the heater 14 the temperature of the heater 14 is controlled.
    • 本发明涉及一种可调谐光学器件10,其包括具有随温度变化的光学特性的光纤器件12和加热器14.加热器14热耦合到光纤器件12.加热器14包括金属层18 以及电连接到金属层18的两个电触点20,22.电触点20,22沿着金属层18彼此间隔开。金属层18在触点20之间的电阻 ,22随温度变化,用作电阻加热器。 本发明还包括电连接到加热器14的控制器16.控制器16向加热器14提供电力并测量加热器14两端的电压。控制器16将测得的电压与预选参考值进行比较 值。 然后,控制器调节供应给加热器14的电流量。通过调节供应给加热器14的电流量,控制加热器14的温度。