共 11 条
Wavelength division multiplexing based on apodized planar holographic Bragg reflectors
被引:9
作者:
Greiner, CM
[1
]
Iazikov, D
[1
]
Mossberg, TW
[1
]
机构:
[1] LightSmyth Technol Inc, Eugene, OR 97041 USA
关键词:
D O I:
10.1364/AO.43.004575
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
We report wavelength division multiplexing based on lithographically fabricated slab-waveguide-contained planar holographic Bragg reflectors (HBRs). Partial HBR diffractive contour writing and contour displacement are successfully demonstrated to enable precise bandpass engineering of multiplexer transfer functions and make possible compact-footprint devices based on hologram overlay. Four- and eight-channel multiplexers with channel spacings of similar to50 and similar to100 GHz, improved sidelobe suppression, and flattop passbands are demonstrated. When a second-order apodization effect, comprising effective waveguide refractive-index variation with written contour fraction, and the effect of hologram overlap on the hologram reflective amplitude are included in the simulation, excellent agreement between predicted and observed spectral passband profiles is obtained. With demonstrated simulation capability, the ability to fabricate general desired passband profiles becomes tractable. (C) 2004 Optical Society of America.
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页码:4575 / 4583
页数:9
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