A novel WDM optical filter based on volume holographic gratings recorded in transmissive-writing and orthogonal-readout scheme

Dong Liu; Da-yong Wang; Shi-quan Tao; Yu-hong Wan; Zhu-qing Jiang

doi:10.1117/12.835377

5 August 2009 A novel WDM optical filter based on volume holographic gratings recorded in transmissive-writing and orthogonal-readout scheme

Dong Liu, Da-yong Wang, Shi-quan Tao, Yu-hong Wan, Zhu-qing Jiang

Author Affiliations +

Proceedings Volume 7383, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications; 73832D (2009) https://doi.org/10.1117/12.835377
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

Using transmissive-writing and orthogonal-readout scheme, a dual-channel wavelength division multiplexer on the bases of two volume holographic gratings is demonstrated for the first time. The two gratings locate in different areas of a piece of doubly doped LiNbO3 photorefractive crystal, so that each grating can reach the maximal diffraction efficiency of the crystal. The gratings are recorded in the crystal by using green laser. During the readout, the input infrared light is incident on a surface of the material perpendicularly, and the light beam diffracted by one of the two channels emerge from a surface adjacent the input one. The two diffracted beams both propagate normally to the output surface. This makes it easier to couple the communication light beams into and out of the device. The filter works at the third window of optical communication with a channel space of 0.72 nm.

Citation Download Citation

Dong Liu, Da-yong Wang, Shi-quan Tao, Yu-hong Wan, and Zhu-qing Jiang "A novel WDM optical filter based on volume holographic gratings recorded in transmissive-writing and orthogonal-readout scheme", Proc. SPIE 7383, International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Infrared Imaging and Applications, 73832D (5 August 2009); https://doi.org/10.1117/12.835377

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