American Journal of Optics and Photonics

Archive

Volume 8, Issue 2, June 2020

  • Analysis and Design of 2×4 90° Crystal Space Optical Hybrid for Coherent Optical Communication

    Xizheng Ke, Jianlu Han

    Issue: Volume 8, Issue 2, June 2020
    Pages: 33-39
    Received: 6 March 2020
    Accepted: 24 March 2020
    Published: 23 April 2020
    DOI: 10.11648/j.ajop.20200802.11
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    Abstract: Based on the principles of crystal birefringence, wave plate phase delay and polarization transformation, a 2×4 90 degree crystal optical hybrid is presented. The beam splitting and coupling between signal and local oscillator lights of the hybrid is realized by two birefringent crystals and two half wave plates, and the required phase shift is pro... Show More
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  • Paradoxa in the Blueprint of the Visual Organ: Their Contribution to ‘Intelligent’ Vision

    Norbert Lauinger

    Issue: Volume 8, Issue 2, June 2020
    Pages: 40-50
    Received: 30 June 2020
    Accepted: 24 July 2020
    Published: 13 August 2020
    DOI: 10.11648/j.ajop.20200802.12
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    Abstract: The development of the eyes is a product of the brain; the development of the central visual nerve tract which leads from the eyes to the brain is a product of the eyes and the development of the six extraocular muscles for the oculo-motoric control of the eyes is a further product of the brain. Therefore, the human visual system is a product of th... Show More
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