Optical shutter assembly

G - Physics – 02 – F

Patent

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Details

G02F 1/03 (2006.01) G02B 26/04 (2006.01) G02F 1/01 (2006.01) G02F 1/17 (2006.01) G02F 1/31 (2006.01) H04J 14/00 (2006.01)

Patent

CA 2446841

The present invention pertains to an optical shutter (103), comprising an photon-absorbing layer (105), and a surface layer in a transparent state on at least one side of the photon-absorbing layer (105), wherein the optical shutter (103), is characterized by the absorption of photons to change the photon-absorbing layer (105), to an opaque state and to change the surface layer (15), to a reflective state. The optical shutter (103), is reversibly imageable between these transparent and reflective states. The optical shutter (103), may comprise a metallized layer on at least one side of the photon- absorbing layer. Preferably, the optical shutter comprises an organic free radical compound, such as a salt of an aminium radical cation, in the photon- absorbing layer. Also provided are optical switch devices and optical buffers (120) and (130), comprising such optical shutters and methods of switching an optical signal utilizing such optical shutters and switch devices.

L'invention concerne un obturateur optique (103), comprenant une couche absorbant les photons (105), et une couche superficielle à l'état transparent au moins du côté de la couche absorbant les photons (105), l'obturateur optique (103) se caractérise par l'absorption de photons, de sorte que la couche absorbant les photons (105) passe à l'état opaque et que la couche superficielle (15) change et à un état réfléchissant. L'obturateur optique (103) est imageable de manière réversible entre ces états transparent et opaque. Ledit obturateur optique (103) peut comprendre une couche métallisée sur au moins côté de la couche absorbant les photons. Ledit obturateur comprend, de préférence, un composé de radicaux libres organique, tel qu'un sel de cation à radical ammonium, dans la couche absorbant les photons. L'invention porte également sur des dispositifs de communication et sur des tampons optiques (120) et (130), comprenant lesdits obturateurs optique ainsi que sur des procédés de commutation d'un signal optique dans lesquels lesdits obturateurs et dispositifs de commutation sont utilisés.

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