| Original Articles |
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Feasibility of Non-Collinear TeO2 Acoustic-Optic Tunable Filters Used in the Optical Communication |
LIU Wei;SUN Yu-Nan;CUI Fang;BAN Long |
| Department of Physics, Capital Normal University, Beijing 100037Department of Opto-Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081 |
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| Cite this article: |
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LIU Wei, SUN Yu-Nan, CUI Fang et al 2007 Chin. Phys. Lett. 24 986-989 |
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Abstract The characteristics and the structure of TeO2 acoustic-optic tunable filter used in communication are discussed briefly based on the acoustic-optic theory and it is shown that a large optical incident angle and a long interaction length are suitable for the optical add/drop multiplexer based on the TeO2 acoustic-optic tunable filter. The distribution of acoustic energy flow in the device supports
the large optical incident angle. The long interaction length depends on the change of the device structure to some degree. The measured results of the samples show that the diffraction efficiency reaches at 96% in the tuning range larger than 100nm and the bandwidth is about 2nm. It can be found that there is a good consistency with the basic theoretical mode. The optimized design result shows that the diffraction efficiency can arrive at 100%, and the bandwidth can be less than 0.4nm. Thus, the non-collinear TeO2 acoustic-optic tunable filter can play an important role in the coming general optical network.
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| Keywords:
42.79.Jq
42.79.Sz
78.20.Hp
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Received: 18 September 2006
Published: 26 March 2007
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| PACS: |
42.79.Jq
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(Acousto-optical devices)
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42.79.Sz
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(Optical communication systems, multiplexers, and demultiplexers?)
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78.20.Hp
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