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    Loss engineering to improve system functionality and output
    1.
    发明授权
    Loss engineering to improve system functionality and output 有权

    公开(公告)号：US11131619B2

    公开(公告)日：2021-09-28

    申请号：US15981228

    申请日：2018-05-16

    Applicant: Washington University

    Inventor： Sahin Kaya Ozdemir ,  Lan Yang ,  Bo Peng

    IPC: G01N15/14 ,  G01N21/77 ,  G01N21/65

    Abstract: A system and method for engineering loss in a physical system by steering parameters of the physical system to the vicinity of an exceptional point is disclosed. In the vicinity of an exceptional point, localization of the fields helps to enhance any linear or nonlinear processes. As examples loss-induced transparency in the intracavity field intensities of coupled resonators, loss-induced suppression and enhancement of thermal nonlinearity in coupled resonators and loss-induced suppression and revival of Raman lasing in whispering-gallery-microcavities are demonstrated.

    METHOD AND SYSTEM FOR PARITY-TIME SYMMETRIC OPTICS AND NONRECIPROCAL LIGHT TRANSMISSION
    3.
    发明申请
    METHOD AND SYSTEM FOR PARITY-TIME SYMMETRIC OPTICS AND NONRECIPROCAL LIGHT TRANSMISSION 有权
    非对称光传输方法与系统

    公开(公告)号：US20150295379A1

    公开(公告)日：2015-10-15

    申请号：US14685335

    申请日：2015-04-13

    Applicant: Washington University

    Inventor： Sahin Kaya Ozdemir ,  Bo Peng ,  Lan Yang

    IPC: H01S3/06 ,  H01S3/10

    CPC classification number: H01S3/10092 ,  G02F1/365 ,  G02F2203/15 ,  H01S3/0604 ,  H01S3/0627 ,  H01S3/082 ,  H01S3/094038 ,  H01S3/1608 ,  H01S3/176

    Abstract: A method and system for optical systems based on parity-time symmetry and its breaking, and for nonreciprocal light transmission in a parity-time symmetric micro-resonator system are provided. The system includes an optical assembly that includes a first dissipative optical system and a second optical system coupled in energy transfer communication with the first optical system. The second optical system is configured to receive a continuous flow of energy from an external source and to transfer energy to the first optical system through the couple wherein the energy transferred to the first optical system from the second optical system is approximately equal to the energy dissipated in the first optical system, where the energy transferred to the first optical system from the second optical system is selectable using at least one of an amount of couple between the first optical system and the second optical system and a gain of the second optical system.

    Abstract translation: 提供了一种基于奇偶校验 - 时间对称性及其断开的光学系统的方法和系统，以及用于奇偶校验 - 时间对称微谐振器系统中的非互易光传输的方法和系统。 该系统包括光学组件，其包括第一耗散光学系统和与第一光学系统的能量传递通信耦合的第二光学系统。 第二光学系统被配置为从外部源接收持续的能量流并且通过耦合将能量传递到第一光学系统，其中从第二光学系统传送到第一光学系统的能量近似等于所耗散的能量 在第一光学系统中，使用第一光学系统和第二光学系统之间的耦合量和第二光学系统的增益中的至少一个可选择从第二光学系统传送到第一光学系统的能量。

    LOSS ENGINEERING TO IMPROVE SYSTEM FUNCTIONALITY AND OUTPUT
    5.
    发明申请
    LOSS ENGINEERING TO IMPROVE SYSTEM FUNCTIONALITY AND OUTPUT 审中-公开

    公开(公告)号：US20180306696A1

    公开(公告)日：2018-10-25

    申请号：US15981228

    申请日：2018-05-16

    Applicant: Washington University

    Inventor： Sahin Kaya Ozdemir ,  Lan Yang ,  Bo Peng

    IPC: G01N15/14

    CPC classification number: G01N15/1434 ,  G01N21/7746 ,  G01N2021/655 ,  Y10S977/88

    Abstract: A system and method for engineering loss in a physical system by steering parameters of the physical system to the vicinity of an exceptional point is disclosed. In the vicinity of an exceptional point, localization of the fields helps to enhance any linear or nonlinear processes. As examples loss-induced transparency in the intracavity field intensities of coupled resonators, loss-induced suppression and enhancement of thermal nonlinearity in coupled resonators and loss-induced suppression and revival of Raman lasing in whispering-gallery-microcavities are demonstrated.

    Tunable add-drop filter with an active resonator
    9.
    发明授权
    Tunable add-drop filter with an active resonator 有权

    公开(公告)号：US12247909B2

    公开(公告)日：2025-03-11

    申请号：US18322118

    申请日：2023-05-23

    Applicant: Washington University

    Inventor： Sahin Kaya Ozdemir ,  Lan Yang ,  Bo Peng ,  Faraz Monifi

    IPC: G01N15/14 ,  G01N15/1434 ,  G01N21/77 ,  G01N21/65

    Abstract: A method of transmitting at least one optical signal through an add-drop filter includes directing the at least one optical signal into a first tapered optical fiber of the add-drop filter. The add-drop filter includes an active resonator side-coupled between the first tapered optical fiber and a second tapered optical fiber, and the active resonator is doped with at least one rare earth ion. A tuned optical gain is produced by delivering a tuned amount of pump laser energy to the at least one rare earth ion at a sub-lasing level, the tuned optical gain configured to compensate an intrinsic loss of the active resonator.

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