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    Multi-quantum well optical waveguide with broadband optical gain
    2.
    发明申请
    Multi-quantum well optical waveguide with broadband optical gain 失效
    具量子阱光学增益的多量子阱光波导

    公开(公告)号：US20060233213A1

    公开(公告)日：2006-10-19

    申请号：US11105912

    申请日：2005-04-13

    Applicant: Fow-Sen Choa ,  Tawee Tanbun-Ek

    Inventor： Fow-Sen Choa ,  Tawee Tanbun-Ek

    IPC: H01S3/03

    CPC classification number: H01S5/4043 ,  B82Y20/00 ,  H01S5/026 ,  H01S5/1014 ,  H01S5/3095 ,  H01S5/34306 ,  H01S5/34373 ,  H01S5/4087 ,  H01S2301/04 ,  H01S2301/185

    Abstract: A multi-quantum well optical waveguide structure comprises a plurality of active regions including quantum wells with different gain peak wavelengths to provide an ultra broadband optical gain spectrum. Two adjacent sets of active regions having a large band gap difference are connected by a tunneling injection layer to provide smooth electron transport. Single transverse-mode operation is obtained by narrowly tapering the width of the multi-quantum well optical waveguide from the center to the two ends. Higher-order modes are suppressed at the output of the tapered waveguide, even though the center waveguide portion supports higher-order modes. In this way, the multi- quantum well optical waveguide can be utilized for ultra broadband optical amplification using a single mode fiber.

    Abstract translation: 多量子阱光波导结构包括多个有源区，包括具有不同增益峰值波长的量子阱，以提供超宽带光增益谱。 具有大带隙差的两组相邻的有源区通过隧道注入层连接，以提供平滑的电子传输。 通过将多量子阱光波导的宽度从中心狭窄地缩小到两端来获得单横模式操作。 即使中心波导部分支持高阶模式，高阶模也被抑制在锥形波导的输出处。 以这种方式，多量子阱光波导可以用于使用单模光纤的超宽带光放大。

    Multi-quantum well optical waveguide with broadband optical gain
    4.
    发明授权
    Multi-quantum well optical waveguide with broadband optical gain 失效
    具量子阱光学增益的多量子阱光波导

    公开(公告)号：US07433567B2

    公开(公告)日：2008-10-07

    申请号：US11105912

    申请日：2005-04-13

    Applicant: Fow-Sen Choa ,  Tawee Tanbun-Ek

    Inventor： Fow-Sen Choa ,  Tawee Tanbun-Ek

    IPC: G02B6/10

    CPC classification number: H01S5/4043 ,  B82Y20/00 ,  H01S5/026 ,  H01S5/1014 ,  H01S5/3095 ,  H01S5/34306 ,  H01S5/34373 ,  H01S5/4087 ,  H01S2301/04 ,  H01S2301/185

    Abstract: A multi-quantum well optical waveguide structure comprises a plurality of active regions including quantum wells with different gain peak wavelengths to provide an ultra broadband optical gain spectrum. Two adjacent sets of active regions having a large band gap difference are connected by a tunneling injection layer to provide smooth electron transport. Single transverse-mode operation is obtained by narrowly tapering the width of the multi-quantum well optical waveguide from the center to the two ends. Higher-order modes are suppressed at the output of the tapered waveguide, even though the center waveguide portion supports higher-order modes. In this way, the multi-quantum well optical waveguide can be utilized for ultra broadband optical amplification using a single mode fiber.

    Abstract translation: 多量子阱光波导结构包括多个有源区，包括具有不同增益峰值波长的量子阱，以提供超宽带光增益谱。 具有大带隙差的两组相邻的有源区通过隧道注入层连接，以提供平滑的电子传输。 通过将多量子阱光波导的宽度从中心狭窄地缩小到两端来获得单横模式操作。 即使中心波导部分支持高阶模式，高阶模也被抑制在锥形波导的输出处。 以这种方式，多量子阱光波导可以用于使用单模光纤的超宽带光放大。

    Broadband tunable semiconductor laser source
    6.
    发明授权
    Broadband tunable semiconductor laser source 失效
    宽带可调半导体激光源

    公开(公告)号：US6108362A

    公开(公告)日：2000-08-22

    申请号：US954305

    申请日：1997-10-17

    Applicant: Laura Ellen Adams ,  Clyde George Bethea ,  Wei-Chiao Fang ,  Gerald Nykolak ,  Roosevelt People ,  Arthur Mike Sergent ,  Tawee Tanbun-Ek ,  Won-Tien Tsang

    Inventor： Laura Ellen Adams ,  Clyde George Bethea ,  Wei-Chiao Fang ,  Gerald Nykolak ,  Roosevelt People ,  Arthur Mike Sergent ,  Tawee Tanbun-Ek ,  Won-Tien Tsang

    IPC: H01S3/10 ,  H01S5/0625 ,  H01S5/10 ,  H01S5/00 ,  H01S3/08

    CPC classification number: H01S5/06258 ,  H01S5/10

    Abstract: A tunable semiconductor laser comprises a gain section having an MQW active region, a uniform pitch grating DFB region, and first waveguide. A composite reflector, including a second MQW region and a second waveguide, forms a cavity resonator with the DFB region. A voltage applied to the composite reflector induces a quantum confined stark effect, thereby allowing the wavelength to be altered. In one embodiment, the current drive to the active region and the shape of the first waveguide (e.g., a raised-sine function) are mutually adapted so that N longitudinal modes have essentially the same threshold gain and so that the DFB region spanned by the first waveguide is segmented into N zones, each zone providing optical feedback at a different wavelength corresponding to a different longitudinal mode.

    Abstract translation: 可调谐半导体激光器包括具有MQW有源区，均匀间距光栅DFB区和第一波导的增益部。 包括第二MQW区域和第二波导的复合反射器与DFB区域形成空腔谐振器。 施加到复合反射器的电压引起量子限制的斯塔克效应，从而允许改变波长。 在一个实施例中，对有源区域的当前驱动和第一波导的形状（例如，升高的正弦函数）相互适应，使得N个纵向模式具有基本上相同的阈值增益，并且使得由 第一波导被分割成N个区域，每个区域提供对应于不同纵向模式的不同波长的光学反馈。

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