Compact and monolithic coarse wavelength-division multiplexer-demultiplexer fabricated by use of a high-spatial-frequency transmission grating buried in a slab waveguide
Optics Letters, Vol. 29, Issue 11, pp. 1188-1190 (2004)
http://dx.doi.org/10.1364/OL.29.001188
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Abstract
A compact and monolithic four-channel demultiplexer with 20-nm spacing was fabricated by use of a high-spatial-frequency transmission grating buried in a silica waveguide. The grating was successfully buried in a silica slab waveguide by overcladding by plasma-enhanced chemical-vapor deposition. The device’s size was approximately 5.1mm×9.2mm . The average insertion loss was 13 dB. The average cross talk was -15dB for adjacent channels and -19dB for nonadjacent channels. The polarization-dependent loss was estimated to be as low as 0.7 dB.
© 2004 Optical Society of America
OCIS Codes
(220.3740) Optical design and fabrication : Lithography
(230.1950) Optical devices : Diffraction gratings
(230.7370) Optical devices : Waveguides
Citation
Tatsuhiro Nakazawa, Shigeo Kittaka, Keiji Tsunetomo, Kenji Kintaka, Junji Nishii, and Kazuyuki Hirao, "Compact and monolithic coarse wavelength-division multiplexer-demultiplexer fabricated by use of a high-spatial-frequency transmission grating buried in a slab waveguide," Opt. Lett. 29, 1188-1190 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-11-1188
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