Browsing by Author "Hsu, Tzu-An"

Now showing 1 - 2 of 2

Adaptive and secure VCSEL FSO based on simple dual-polarized architecture for short distance transmission
(2020-09-01)
Yeh, Chien-Hung
;
Yang, Yun-Cheng
;
Hsu, Tzu-An
;
Chen, Yu-Wen
;
Chow, Chi-Wai
In this study, using dual-polarized-multiplexing VCSEL based free space optical (FSO) transmission system is demonstrated experimentally. Two orthogonal polarizers (POLs), a beam splitter (BS) and a reflected mirror (M) are applied in the FSO transmitter (Tx) side to combine dual FSO signals into one for data security without code encryption. In the receiver (Rx) side, two blended FSO channels can be decoded adaptively by applying a POL with properly polarization status. Furthermore, when we add two corresponding POLs with orthogonal polarization in the Rx side, the FSO capacity also can double by the presented dual-polarized FSO architecture. Here, the relationships of the detected FSO powers and rotating angle between two POLs are also experimentally discussed.
Survivable and Reliable WDM-PON System With Self-Protected Mechanism Against Fiber Fault
(2019-01-01)
Yeh, Chien-Hung
;
Luo, Chien-Ming
;
Xie, Yue-Ru
;
Chow, Chi-Wai
;
Chen, Yu-Wen
In the paper, we present and design a self-restored wavelength multiplexing division passive optical network (WDM-PON) configuration to prevent the fiber failure and data disconnection. Here, the new remote node (RN) and optical network unit (ONU) are proposed in the fiber network to provide the protection behavior to increase the network reliability and flexibility. Moreover, the network performances of WDM signals are also analyzed and discussed.