NDLI: Etched Diffraction Grating Demultiplexers With Large Free-Spectral Range and Large Grating Facets

Content Provider	IEEE Xplore Digital Library
Author	Jun Song Ning Zhu Jian-Jun He Sailing He
Copyright Year	1989
Abstract	A design for etched diffraction grating demultiplexers is presented to obtain both large grating facets and a larger free-spectral range (FSR) using the optimal chirped diffraction orders for different facets. The large grating facets by using a large diffraction order contribute to lowering the manufacturing difficulty, and can provide lower polarization-dependent loss. However, usually the large diffraction order must lower the FSR of the device by all means. Based on the present design, the FSR can overlay the whole diffraction envelop for a special order, but avoid the influence of the adjacent diffraction envelops. Calculations indicate that the extinction ratio between the operated order and adjacent orders can attain a 35 dB or so, which makes the crosstalk from channels in adjacent envelops to those in the operated diffraction envelop acceptable
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	2695
Ending Page	2697
Page Count	3
File Size	230909
File Format	PDF
ISSN	10411135
Volume Number	18
Issue Number	24
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Diffraction gratings Etching Arrayed waveguide gratings Optical diffraction Extinction ratio Wavelength division multiplexing Manufacturing Polarization Optical crosstalk wavelength-division multiplexing (WDM) Demultiplexing diffraction order free-spectral range (FSR) gratings optical planar waveguide components
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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