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    • 7. 发明授权
    • Multiwavelength transmitter
    • 多波长发射机
    • US08326154B2
    • 2012-12-04
    • US12515318
    • 2007-11-16
    • Alistair J. PoustieGraeme D. MaxwellRichard WyattDavid W. SmithDavid G. MoodieIan F. Lealman
    • Alistair J. PoustieGraeme D. MaxwellRichard WyattDavid W. SmithDavid G. MoodieIan F. Lealman
    • H04J14/02
    • H04B10/506G02B6/12021G02B6/12023G02B6/12026G02B6/12028H01S5/0085H01S5/0268H04J14/02
    • A multiwavelength transmitter comprises several laser sources (1) each configured to generate light of a different wavelength and a first array waveguide grating (2) arranged to direct light from each of the laser sources (1) into a first waveguide. The transmitter further comprises several electroabsorption modulators (7) each arranged to modulate light at one of the wavelengths with a respective data signal and a second array waveguide grating (6) arranged to direct each of said different wavelengths of light from the first waveguide to a respective one of the modulators (7). The optical modulators (7) are reflective optical modulators and the second array waveguide grating (6) is arranged to direct the modulated light reflected from each of the optical modulators (7) back into the first waveguide. An optical circulator (5) is provided in the first waveguide to couple modulated light from the second array waveguide grating (6) into an output waveguide. The laser sources each comprise a respective reflective semiconductor optical amplifier (1) and share a common cavity reflector (3). The first array waveguide grating (2) is located in the optical path between the semiconductor optical amplifiers (1) and the common cavity reflector (3). The transmitter has the advantage that it can be manufactured by hybrid integration of a monolithic wavelength generation sub-module and a monolithic data modulation sub-module.
    • 多波长发射器包括被配置为产生不同波长的光的多个激光源(1)和布置成将来自每个激光源(1)的光引导到第一波导中的第一阵列波导光栅(2)。 发射机还包括几个电吸收调制器(7),每个电吸收调制器(7)被布置成用相应数据信号调制波长中的一个的光,并且第二阵列波导光栅(6)布置成将来自第一波导的所述不同波长的光的每一个引导到 相应的一个调制器(7)。 光调制器(7)是反射光学调制器,第二阵列波导光栅(6)被布置成将从每个光学调制器(7)反射的调制光引导回第一波导。 在第一波导中设置光环行器(5),以将来自第二阵列波导光栅(6)的调制光耦合到输出波导中。 激光源各自包括相应的反射半导体光放大器(1)并且共享公共腔反射器(3)。 第一阵列波导光栅(2)位于半导体光放大器(1)和公共空腔反射器(3)之间的光路中。 发射机的优点是可以通过单片波长生成子模块和单片数据调制子模块的混合集成来制造。