期刊
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
卷 18, 期 5, 页码 1176-1185出版社
OPTICAL SOC AMER
DOI: 10.1364/JOSAA.18.001176
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The mode coupling in double-sided tilted gratings between the LP01 and LP11 modes is analyzed far three different excitation conditions. It is found that a number of modes, including various LP11q modes with different polarization states and TE01, TM01, and HE21 modes, can be formed through, the mode conversion process in the gratings and with a linear combination of four different LP11 modes. Efficient single-sided and double-sided tilted gratings are demonstrated. The tilted gratings presented exhibit LP01-to-LP11 merle coupling over a spectral width as wide as 160 nm. The transmission spectra of the tilted fiber gratings agree well with the spectrum predicted by the coupled-mode analysis. (C) 2001 Optical Society of America.
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