American Journal of Optics and Photonics

Volume 3, Issue 3, June 2015

  • Erbium Doped Fiber Lasers for Long Distance Communication Using Network of Fiber Optics

    Thalangunam Krishnaswamy Subramaniam

    Issue: Volume 3, Issue 3, June 2015
    Pages: 34-37
    Received: Jul. 21, 2015
    Accepted: Jul. 28, 2015
    Published: Aug. 11, 2015
    Downloads:
    Views:
    Abstract: A fiber doped with erbium laser is used in long distance communication over networks of fiber optics. Especially, in under water communication links where optical signals can be amplified by joining erbium-doped fiber at appropriate locations in the network of the fiber. Thus, a signal, when optically transmitted will get amplified and this will be... Show More
  • LED Light Spectrum Affects the Photosynthetic Performance of Houttuynia Cordata Seedlings

    Zhaoqing Wang, Jingyun Tian, Bo Yu, Liyan Yang, Yi Sun

    Issue: Volume 3, Issue 3, June 2015
    Pages: 38-42
    Received: Jul. 21, 2015
    Accepted: Jul. 28, 2015
    Published: Aug. 11, 2015
    Downloads:
    Views:
    Abstract: We investigated the effects of light-emitting diodes (LED) with various light spectrum (white, red, yellow, green and blue) on photosynthesis of Houttuynia cordata seedlings. The seedlings were either cultivated under florescent lamp or under various LED lights. The leaves were collected and chlorophyll fluorescence parameters, the contents of chlo... Show More