@inproceedings{fb51ca01f6f94c20931f85c9e9b1c70a,
title = "Modified Hamming function weighted waveguide structure for the broadband and minimized mismatched optical couplers",
abstract = "We numerically investigate a new function modified from Hamming function to apply in weighting the waveguide structure of a mismatched optical coupler with the characteristics of low crosstalk, short length, and broad C+L-band. The full factorial design and beam propagation method are being used to seek the optimal structure parameters of coupling waveguide. This modified Hamming weighting function (M-HWF) is proved to have the superior performances to Hamming weighting function (HWF) in several ways. In theoretical computation, the M-HWF and HWF waveguides have the coupling lengths of 11 mm and 16 mm, respectively at crosstalk of -40 dB and operating wavelength of 1.57 μm. After the numerical design of waveguide structure parameters, the M-HWF also obtain a shorter coupling length of 4.50 mm than coupling length of 5.90 mm of HWF at crosstalk of -40 dB and within the C+L-band (1.53∼1.61 μm). The M-HWF waveguide with the shortest coupling length of 4.5 mm can even reach a broader bandwidth between 1.50 and 1.70 μm.",
keywords = "Coupling waveguide structure, Hamming function, Mismatched optical coupler, Optical directional coupler",
author = "Chen, {Chi Feng} and Ku, {Yun Sheng} and Kung, {Tsu Te} and Wang, {Hau Wei} and Yeh, {Mau Shiun}",
year = "2009",
doi = "10.1117/12.855200",
language = "???core.languages.en_GB???",
isbn = "9780819480323",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Passive Components and Fiber-based Devices VI",
note = "Passive Components and Fiber-based Devices VI ; Conference date: 02-11-2009 Through 06-11-2009",
}