@article{MAKHILLJEAS2019142318681,
    title = {Studying the Properties of Metric Anisotropy for Implementation the
Directed Couplers in Optical Fiber},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {14},
    number = {23},
    pages = {8899-8902},
    year = {2019},
    issn = {1816-949x},
    doi = {jeasci.2019.8899.8902},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2019.8899.8902},
    author = {Al-Gawagzeh},
    keywords = {Optical fiber,directional coupler,spiral,photo elasticity,power separation,attenuation},
    abstract = {This research will study the ability of directional coupler realization on the ground of double
refraction in anisotropic spiral stowed fiber at room temperature, the importance of using the features of
anisotropic media to minimize the attenuation and dispersion in the transmitted signals in the fiber optic system
of transfer which caused by the power exchange between waves and the possibility to get calculation results
for specific cases. And try to determine the half-length of the beat region &xi;<sub>1</sub> for a certain composition of the 1
spiral single mode optical fibers depending on the parameters of the spiral to construct spiral single mode
optical fibers based on photo elasticity. Also in this research we will try to define specific parameters which can
be taken as a basis for directional couplers design to uniformly separate the power of the optical signal and to
obtain the condition of uniform power distribution between the main waves (HE<sub>11</sub><sup>e</sup> and HE<sub>11</sub><sup>o</sup>).}
    }