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    SINE-COSINE OPTICAL FREQUENCY ENCODER DEVICES BASED ON OPTICAL POLARIZATION PROPERTIES
    2.
    发明申请
    SINE-COSINE OPTICAL FREQUENCY ENCODER DEVICES BASED ON OPTICAL POLARIZATION PROPERTIES 审中-公开

    公开(公告)号：US20180372517A1

    公开(公告)日：2018-12-27

    申请号：US15975757

    申请日：2018-05-09

    Applicant: General Photonics Corporation

    Inventor： Xiaotian Steve Yao ,  Xiaojun James Chen

    IPC: G01D5/347 ,  G01J3/447 ,  G01J3/18 ,  G01J3/02 ,  G01J9/02

    Abstract: Optical polarization-based devices and techniques are provided to enable low cost construction and easy signal processing to measure the light frequency via measurements of signals associated with a delay between the two orthogonal polarizations after passing through a DGD element and the retardation value of the DGD element without directly measuring the optical frequency. The optical detection may be designed in various configurations. In particular, for example, the optical detection may split the optical output of the DGD into two optical beams with two different optical detectors so that the final frequency information can be deducted into a pair of sine and cosine functions, such as a pair of sine and cosine functions of measured optical signal levels and the retardation value of the DGD element.

    Sine-cosine optical frequency encoder devices based on optical polarization properties
    5.
    发明授权
    Sine-cosine optical frequency encoder devices based on optical polarization properties 有权

    公开(公告)号：US10895477B2

    公开(公告)日：2021-01-19

    申请号：US15975757

    申请日：2018-05-09

    Applicant: General Photonics Corporation

    Inventor： Xiaotian Steve Yao ,  Xiaojun James Chen

    IPC: G01J3/447 ,  G01D5/347 ,  G01J9/02 ,  G01J3/02 ,  G01J3/18 ,  G01B9/02

    Abstract: Optical polarization-based devices and techniques are provided to enable low cost construction and easy signal processing to measure the light frequency via measurements of signals associated with a delay between the two orthogonal polarizations after passing through a DGD element and the retardation value of the DGD element without directly measuring the optical frequency. The optical detection may be designed in various configurations. In particular, for example, the optical detection may split the optical output of the DGD into two optical beams with two different optical detectors so that the final frequency information can be deducted into a pair of sine and cosine functions, such as a pair of sine and cosine functions of measured optical signal levels and the retardation value of the DGD element.

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