Ultrafast wide range all-optical switch using complex refractive-index changes in a composite film of silver and polymer containing photochromic dye

1998 ◽  
Vol 83 (6) ◽  
pp. 2894-2900 ◽  
Author(s):  
Kyoichi Sasaki ◽  
Toshihiko Nagamura
Keyword(s):  
Refractive Index ◽  
Composite Film ◽  
Optical Switch ◽  
Complex Refractive Index ◽  
Photochromic Dye ◽  
Wide Range ◽  
All Optical ◽  
Index Changes ◽  
All Optical Switch

PARAMETER CONTROLLABLE ALL-OPTICAL SWITCHING IN A HIGH-NONLINEAR MICRO RING COUPLED MZI THROUGH A PUMPED NONLINEAR COUPLER

2005 ◽  
Vol 14 (01) ◽  
pp. 85-91 ◽  
Author(s):  
ALIREZA BANANEJ ◽  
CHUNFEI LI
Keyword(s):  
Optical Switching ◽  
Optical Switch ◽  
Switching Device ◽  
Switching Power ◽  
Optimum Parameters ◽  
Wide Range ◽  
All Optical ◽  
Working Parameters ◽  
Nonlinear Coupler ◽  
All Optical Switch

We propose a dynamic all-optical switch in a high-nonlinear and 3cm long micro-ring resonator side coupled with a M-Z interferometer (MZI) through a nonlinear erbium-doped coupler. This switching device works in the 1.55 μm wavelength. One of its two channels is pumped by a light at 980 nm. When changing the pump power to control the coupler reflectivity, the working parameters of the switching device can be changed in a wide range. The optimum parameters of the switching devise with 0.6 mW switching power and 9 ns switching time can be obtained.

All-optical switch and modulator using photochromic dye doped polymer waveguides

2003 ◽  
Vol 21 (1-3) ◽  
pp. 543-548 ◽  
Author(s):  
Jae-Wook Kang ◽  
Eunkyoung Kim ◽  
Jang-Joo Kim
Keyword(s):  
Optical Switch ◽  
Polymer Waveguides ◽  
Photochromic Dye ◽  
All Optical ◽  
All Optical Switch ◽  
Doped Polymer

ALL-OPTICAL REFLECTANCE CONTROL BASED ON PHOTOINDUCED COMPLEX REFRACTIVE INDEX CHANGES IN GUIDED MODE THIN FILMS CONTAINING INDIUM OR GALLIUM PHTHALOCYANINES

2002 ◽  
Vol 11 (03) ◽  
pp. 205-218 ◽  
Author(s):  
TOSHIHIKO NAGAMURA ◽  
ATSUSHI NAITO ◽  
IORI YOSHIDA ◽  
YU CHEN ◽  
MICHAEL HANACK
Keyword(s):  
Thin Film ◽  
Refractive Index ◽  
Complex Refractive Index ◽  
Nanosecond Laser ◽  
Polymer Thin Film ◽  
Optical Reflectance ◽  
Guided Mode ◽  
All Optical ◽  
Silver Thin Film ◽  
Index Changes

Tetrasubstituted indium or gallium phthalocyanines and their dimers bridged with various ligands were dispersed in a polymer thin film, which was spin-coated on silver thin film vacuum-evaporated on a glass slide. All-optical reflectance control was achieved by complex refractive index changes upon photoexcitation of phthalocyanines by nanosecond laser in such a guided mode geometry. They gave rise in less than ns pulse width, and a few to a few tens of microseconds decay characteristic to the lifetime of the excited triplet state. Repeated and reversible reflectance changes were achieved. Axially bridged phthalocyanine dimers showed almost the same photoresponses as monomers.

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