Coaxial Configuration of the Gating and Signal Light for a Switching Device of a Dye-Dissolved Polymer Film

Abstract

We apply canonical Poisson-Lie T-duality transformations to bosonic open string worldsheet boundary conditions, showing that the form of these conditions is invariant at the classical level, and therefore they are compatible with Poisson-Lie T-duality. In particular the conditions for conformal invariance are automatically preserved, rendering also the dual model conformal. The boundary conditions are defined in terms of a gluing matrix which encodes the properties of D-branes, and we derive the duality map for this matrix. We demonstrate explicitly the implications of this map for D-branes in two non-Abelian Drinfel'd doubles.

Switching mechanism of an all-optical switch using pulsed gating

“…A fastresponse MZI is achieved by using an SOA on both arms of the interferometer, which allows 10 Gbit/s operation. 34) Devices using a thermal effect, [35][36][37][38] which is the case in the present work, exhibit a large extinction ratio with both low insertion loss and crosstalk, and a switching time of around 1 ms. Here, we have developed an optically gated optical switch (all-optical switch) with both a fast response of 10 µs order and a high repetition (³1 kHz) based on a thermal-lens effect in a dye solution.…”

“…An optically gated optical switch without any electric parts is composed of several lenses and a dye-dissolved highboiling-point solvent, where the absorbance of the dye for the signal light is lower than 0.1 and that for the gating light is higher than 3. [35][36][37][38] The most versatile advantage of this system is the easy selection of the wavelength for both the gating light and the signal light. Signal light that is transparent to the dye solution is refracted by a temporally formed microscopic thermal lens (an area with a lower refractive index), which is locally heated around a focal point by the irradiation of the gating light.…”

“…We have tried to measure the shape of the thermal lens and reported on the local temperature around the focal point of the gating light. 35) In the different-axis configuration, the axes of the gating light and signal light are translated by about 40 µm in directions perpendicular to the optical axis. The signal light passes through a side slope of the supposed thermal lens (cone-shaped).…”

Metal-Free Phthalocyanine Layer Prepared on Read-Only-Memory Disc for Super-Resolution Readout

“…The volume-change model of organic dye dissolved in polymer film is previously reported, and it is known to work as an optical switching device. 16) A similar volume-changed area formed inside the laser-beam spot may have worked as an ''optical aperture'' for the superresolution readout in this study. Sublimation also accompanies the volume change, and it may play a similar role as far as large disc-deformation is prevented for some reason.…”

Optical Communications Systems

“…The most versatile advantage of this system is easy selection of the wavelengths for both the gating light and the signal light. The signal light, which is transparent to the dye-solution, is refracted by a temporally formed microscopic thermal-lens (region with lower refractive index) that is locally heated around a focal point by the irradiation of the gating light (Tanaka et al, 2007;Tanaka et al, 2010, Ueno et al, 2003.…”