Two-dimensional photon crystal polarization beam dividing device
Title：
Two-dimensional photon crystal polarization beam dividing device
Application Number：
 200410101823
Application Date：
 2004/12/24
Announcement Date：
 2005/07/20
Pub. Date：
 2007/03/14
Publication Number：
 1641383
Announcement Number：
 1304859
Grant Date：
 2007-3-14
Granted Pub. Date：
 2007-3-14
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G02B 5/30, G02B 27/28
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Li Lieming, Zhen Yurong
Key Words：
 Two-dimensional, photon crystal, polarization beam dividing device
Abstract：
 The planar photon crystal bundle-dispersing polarimeter is characterized in that it's a planar seasonal structure. It's structured by inserting the dielectric stick to the background media or form a air stick by any measure in the solid background media whose refractive index is much higher than that of the dielectric stick. From left to right along the incident direction of the electromagnetic wave, the seasonal structure is a quadrangle. The left parallel side that is also the incident side covers all the incident wave beams, and has a angle with the incident electromagnetic wave; the right parallel side covers all the outdiffusing wave beams. The rest two sides are both out of the transmission bound of the wave beam. This invention has an advantage that the fixity of all the standards of the photon crystal itself won't metamorphose. When the work wavelength is the same, the crystal lattice constant of this invention is much smaller than that of the present planar photon crystal bundle-dispersing polarimeter. Therefore it's portable and cabinet.
Claim：
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PCT：
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2008-4-17
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