Chinese Optics Letters, 2011, 9 (9): 090603, Published Online: Jul. 13, 2011
Demultiplexer based on an of f-axis holographic lens with low monochromatic aberrations 
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解复用器 全息透镜 离轴 单色像差 060.1810 Buffers, couplers, routers,switches, and multiplexers 090.2890 Holographic optical elements 090.1000 Aberration compensation
Abstract
A novel scheme is proposed, in which the aberrations in the off-axis holographic lenses used as demultiplexers are reduced to a low enough level for relatively small channel spacing. The scheme includes optimizing the recording and reconstruction geometries and collimating the reconstruction wave with a gradient-index lens. A demultiplexer operated in the 1 550-nm band with 5-nm channel spacing and ?\infty-dB crosstalk is obtained using the scheme. The channel spacing can be decreased to 2 nm by etching the cladding of the output fibers to a smaller size.
Sensen Li, Shou Liu, Xiangsu Zhang, Xuechang Ren. Demultiplexer based on an of f-axis holographic lens with low monochromatic aberrations[J]. Chinese Optics Letters, 2011, 9(9): 090603.
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