Optical interconnection network using polarization-based ferroelectric liquid crystal gates

Abstract

A polarization-based 4 x 4 optical interconnection network using surface stabilized ferroelectric liquid crystal (SSFLC) gates is demonstrated. The SSFLC gates are comprised of an SSFLC device sandwiched between two polarizing beam splitters. Optical crosstalk using these fast switching programmable devices can be limited to ~-20 dB/gate, which would allow 2-D interconnection networks to be fabricated with thirty-one input channels and 3-D interconnection networks with approximately 225 input channels.

Optical implementation and routing technique for a SW-banyan network

“…Figure 3(a) shows the input pattern, in which the channels are arranged in rows. The interval between the center of neighboring channels is 2 mm, and the diameter of each bit, that is, the diameter of each dot shown in Figure 3 The proposed optical SW-banyan network is constructed only by optical polarization elements (PBSs, PSLMs); thcrefore, if all the interfaces between the optical elements are coated with antireflective film, the total energy loss and cross talk of the whole optical setup, which is mainly determined by the used 1D PSLMs, can be very low [14]. The number of channels of the setup is determined by the size of the used PBSs and optical diffraction.…”

Optics and electrooptics of chiral smectic C liquid crystals

“…Практические применения С*ЖК. Хиральные смектические жидкие кристаллы являются одним из наиболее перспективных ЖК материалов для изде лий электронной техники: высокоинформативных дисплеев с матричной адресацией [53,[131][132][133][134][135][136][137][138], быстродействующих переключателей света в опто электронных системах [139,140], преобразователей изображения на основе структуры фотопроводник-С*ЖК [140][141][142][143][144][145][146][147][148], высокоскоростных линеек из све токлапанных устройств для копировальной техники и принтеров [149][150][151][152][153][154][155]. Остановимся более подроб но на каждом из указанных применений.…”

“…Сегнетоэлектрические жидкие кристаллы явля ются весьма перспективным материалом для систем оптической обработки информации: быстродейству ющих переключателей в схемах оптической логики [74,139,140,159], преобразователей изображения и оптически управляемых матричных модуляторов света на основе структуры фотопроводник -С*ЖК [74, 140-148, 159, 160], цветных фильтров с управ ляемым светопропусканием [119,159] и т.д.…”

<title>Optoelectronic multistage intrconnection network for 2D information images</title>

“…Similarly as it was made in [21], a rigorous estimate of the SNR value will be given for the worst case assuming that when transmitting polarized signals through PS of the first stage (3, a part of each input signal is converted into the cross-polarization signals that are combined in one output, at which output the desired signal and the noise signal have the same polarization component. Then, the signal-to-noise ratio can be expressed by SNRmin = (1 -(3)M/(N -1)j3 (3) Given (3) we can find SNRmin = 2 at (3 = 0.01 for an optoelectronic Cbs network with N =64 and M =12.…”