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Open Access
It is numerically shown that incorporation of a distributed Bragg reflector at the facets of an etched diffraction grating (EDG) can be used to tailor the output spectral response of the device. This technique is used to optimize the overall insertion loss envelope of a distributed etched diffraction grating (DEDG) demultiplexer to improve the output channel uniformity. Numerical results are presented for the transverse electric (TE) polarization, where a channel uniformity of 0.45 dB over 43-nm bandwidth is achieved. A finite-difference time-domain (FDTD) method in combination with perfectly matched layers (PMLs) and periodic boundary condition (PBC) is used to calculate the insertion loss envelope of device.
Published in:
Photonics Journal, IEEE
(Volume:3
,
Issue:
4
)
Date of Publication: Aug. 2011
- Page(s):
- 748 - 755
- ISSN :
- 1943-0655
- INSPEC Accession Number:
- 12175723
- Digital Object Identifier :
- 10.1109/JPHOT.2011.2162823
- Product Type:
- Journals & Magazines
- Date of Publication :
- 25 July 2011
- Date of Current Version :
- 18 August 2011
- Issue Date :
- Aug. 2011
- Sponsored by :
- IEEE Photonics Society
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