Durga Prasad Sapkota and  Madhu Sudan Kayastha and  Koichi Wakita,  Excitonic Refractive Index Change in High Purity GaAs Modulator at Room Temperature for Optical Fiber Communication Network.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2015, vol. 98(2). 205 - 208
    [viewed 23 October 2021]. Available from: https://publications.waset.org/pdf/10000661.