Variable group delay unit and variable group delay optical...

Details Variable group delay unit and variable group delay optical... Variable group delay unit and variable group delay optical...

G - Physics

02

F

G02F 1/295 (2006.01) G02B 6/34 (2006.01) H04B 10/12 (2006.01)

Patent

CA 2369771

Through spacing to each other, an input/output waveguide element for receiving light and a light reflecting element for reflecting light are provided. The light introduced by the input/output waveguide element is reflected by the reflecting element and returned to the input/output waveguide element. On a path of the light, a first lens, a multiple reflecting device and a second lens are disposed with a spacing to one another. The multiple reflecting device has a first interface positioned between said first lens and said light reflecting element, and a second interface opposite thereto, the first and second interface being parallel to each other. The light entering the multiple reflecting device is multiply reflected between the first and second interface depending on a wavelength of the light. The multiple reflecting device has a third interface as a slant surface with an angle to the first interface of greater than 90° and smaller than 180°.

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