Chi-Ping Lee

  • Citations Per Year
Learn More
A 2×2 high contrast ratio optical switch composed of holographic optical switching elements is presented. This switch consists of two electro-optic halfwave plates, four layers of holographic gratings, two dielectric substrates, and one spacer. The contrast ratio can be higher than 54 dB. The contrast ratio improvement of this device is the same as a(More)
The basic optical switch in optical interconnection networks is a 2times2 optical switch which provides two switching states: the "straight" state and the "swap" state. Several kinds of optical switch have been presented such as polarization selective elements combined with electro-optic halfwave plates. Using these basic optical switches to construct a(More)
The holographic optical switches are three-dimensional devices, having the characteristics of flexibility and compactness. The procedure to realize a 4×4 active splitter and active combiner network with holographic optical switches is discussed in detail. After optimum design, the unique features of compactness and flexibility of holographic optical(More)
Multistage interconnection networks (MINs) are used to connect N inputs to N outputs. They are mainly used to connect processor to processor and for processor to memory in distributed and shared memory environment. The MINs are broadly divided into three categories Blocking Non Blocking and Rearrangeable networks. A new improved Arbitrary size Benes network(More)
Recently, the demand for communication has been growing rapidly. Hence, optical multistage network technologies are more appreciated nowadays. A double-layer network is a strictly nonblocking network, and it has the lowest system insertion loss of nondilated networks. A Beneš network is a rearrangeably nonblocking network, and it has the same system(More)
Multicast communications have become more and more important recently, especially in their applications in multimedia communication, quality of service (QoS), video conferencing, and distance education. In a point-to-point (PTP) optical communication system, how to provide multicast services is an essential issue. There are some advantages of active(More)
  • 1