Photon echo in the ensemble of semiconductor quantum dots spread on a glass substrate
Simple procedure to prepare samples containing semiconductor quantum dots was developed. Test photon echo measurements in the ensemble of quantum dots spread on a glass substrate were performed to study optical dephasing processes.
With the development of all-optic network, the hotspot of the research is moving from the backbone network to the metropolitan network, and then to the access network. Much attention has been paid on reducing the cost in these networks. One approach is to adopt Ethernet passive optical network (EPON) architectures in an access network. In this paper a solution of EPON of Broadcasting/WDMA architecture is presented, which is based on several low-cost DWDM devices developed newly by authors, including the precise-wavelength DWDM-LD, DWDM demultipler with interleaver, DWDM receiver array, and dual-window broad-band coupler.