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Cascade Grating Structure for Increasing the Channel Number on Holographic Demultiplexer |
| Jun Won AN |
| Research Center, LGS Co. Ltd., 248-1, Sancheok-ri, Dongtan-myeon, Hwasung-si, Gyeonggi-do, 445-812, Korea |
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| Cite this article: |
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Jun Won AN 2006 Chin. Phys. Lett. 23 1459-1461 |
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Abstract The expansion capability of the channel number in the optical demultiplexer using two cascaded photopolymer volume gratings is reported. It could be accomplished by designing of two gratings with different spectral range. As a result of the experiment, a 0.4-nm-spaced 130-channel demultiplexer with the channel uniformity of 3.5dB, the 3dB-bandwidth of 0.12nm, and the channel crosstalk of -20dB is experimentally demonstrated.
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| Keywords:
42.40.Eq
42.40.Pa
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Published: 01 June 2006
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| PACS: |
42.40.Eq
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(Holographic optical elements; holographic gratings)
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42.40.Pa
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(Volume holograms)
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