期刊
LASER & PHOTONICS REVIEWS
卷 7, 期 6, 页码 L67-L70出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201300063
关键词
silicon-on-insulator; fourier-transform spectrometer; subwavelength; gratings; mach-zehnder interferometers
资金
- Spanish Ministry of Economy [TEC2011-23629]
A planar waveguide Fourier-transform spectrometer with densely arrayed Mach-Zehnder interferometers is demonstrated. Subwavelength gratings are used to produce an optical path difference without waveguide bends. The fabricated device comprises of an array of 32 Mach-Zehnder interferometers, which produce a spatial interferogram without any moving parts, yielding a spectral resolution of 50 pm and a free-spectral range of 0.78 nm. As a result of similar propagation losses in subwavelength grating waveguides and conventional strip waveguides, loss imbalance is minimized and high interferometic extinction ratio of -25 to -30 dB is obtained. Furthermore, phase and amplitude errors arising from normal fabrication variation are compensated by the spectral retrieval process using calibration measurements.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据