Two-dimensional photor crystal polarization beam dividing device
Title：
Two-dimensional photor crystal polarization beam dividing device
Application Number：
 200410101822
Application Date：
 2004/12/24
Announcement Date：
 2005/07/20
Pub. Date：
Publication Number：
 1641382
Announcement Number：
Grant Date：
Granted Pub. Date：
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, photor crystal, polarization beam dividing device
Abstract：
 The planar photon crystal bundle-dispersing polarimeter refers to the field of electromagnetic wave bundle-dispersing polarimeter. Its character is that insert the dielectric stick to the background media whose refractive index is much lower than that of the dielectric stick to form a planar seasonal structure. Along the incident direction of the electromagnetic wave, it's orderly composed of three parts that are the left transmission-enhancing film, the main part and the right transmission-enhancing film. The radius of the dielectric stick in the main part is higher than that of the other two parts. The incident side of the main part is pressed close to the outdiffusing side of the left transmission-enhancing film, and the incident side of the right transmission-enhancing film is pressed close to the side of the outdiffusing side of the main part. 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. This invention can also transmit two reciprocally vertical polarizing ponderance at the same time, so it's polarizing degree is high and the transmitted index is big.
Claim：
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PCT：
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2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







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