Semiconductor laser amplifiers
    2.
    发明授权
    Semiconductor laser amplifiers 失效
    半导体激光放大器

    公开(公告)号:US5291328A

    公开(公告)日:1994-03-01

    申请号:US741418

    申请日:1991-08-01

    CPC分类号: H01S5/5009

    摘要: A semiconductor laser amplifier includes both a waveguide layer and an active layer. In use, an optical wave in the active layer interacts with the waveguiding layer to reduce the polarisation sensitivity of the amplifier. A short, thick active layer is not required, typical dimensions being 250 or 500 .mu.m long, by 0.2 .mu.m high. The mesa is typically about 2 .mu.m wide, but may be wider.

    摘要翻译: PCT No.PCT / GB90 / 00055 Sec。 371日期1991年8月1日 102(e)日期1991年8月1日PCT 1990年1月15日PCT PCT。 出版物WO90 / 08411 1990年7月26日,半导体激光放大器包括波导层和有源层。 在使用中,有源层中的光波与波导层相互作用以降低放大器的偏振灵敏度。 不需要短而厚的活性层,典型尺寸为250或500(m),长度为0.2(my)m。 台面通常约为2(宽),但可能较宽。

    MULTIWAVELENGTH TRANSMITTER
    3.
    发明申请
    MULTIWAVELENGTH TRANSMITTER 有权
    多波长发射机

    公开(公告)号:US20100142962A1

    公开(公告)日:2010-06-10

    申请号:US12515318

    申请日:2007-11-16

    IPC分类号: H04J14/02

    摘要: 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.

    摘要翻译: 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。

    Multiwavelength transmitter
    5.
    发明授权
    Multiwavelength transmitter 有权
    多波长发射机

    公开(公告)号:US08326154B2

    公开(公告)日:2012-12-04

    申请号:US12515318

    申请日:2007-11-16

    IPC分类号: H04J14/02

    摘要: 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.

    摘要翻译: 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。

    Optical filters
    8.
    发明授权
    Optical filters 失效
    光滤波器

    公开(公告)号:US06198863B1

    公开(公告)日:2001-03-06

    申请号:US09051207

    申请日:1998-04-28

    IPC分类号: G02B634

    摘要: An optical filter is formed from at least two grating located in a waveguide region of a semiconductor optical device. Each grating has a multiple peak optical passband. The gratings are spaced apart in the waveguide region and form an optical cavity having a comb-filter characteristic. The gratings may be located in the active region of an optical gain element and in a preferred example are superstructure gratings (SSGs). A number of filters may be joined together in series.

    摘要翻译: 光学滤波器由位于半导体光学器件的波导区域中的至少两个光栅形成。 每个光栅具有多峰光学通带。 光栅在波导区域中间隔开并形成具有梳状滤波器特性的光学腔。 光栅可以位于光学增益元件的有源区域中,并且在优选的示例中是上部结构光栅(SSG)。 多个过滤器可以串联在一起。