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17 June 2003 Photonic bandgap quasi-crystals for integrated WDM devices
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Proceedings Volume 4989, Optical Devices for Fiber Communication IV; (2003)
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States
A novel concept of Photonic Bandgap Quasi-Crystal (PBQC) as a platform for planar integrated WDM optical devices is proposed. The PBQC can be lithographically fabricated in a planar waveguide as a computer-generated two-dimensional hologram. In this approach the spectral selectivity of Bragg gratings, focusing properties of elliptical mirrors, superposition properties of thick holograms, photonic bandgaps of periodic structures, and flexibility of lithography on planar waveguides are combined. In distinction to conventional combination of independent planar Bragg gratings, in PBQC we create multiple bandgaps by synthesizing a synergetic super-grating of a number of individual sub-gratings. The device spectral selectivity is determined by those of the sub-gratings. The super-grating comprises million(s) of dashes etched on an interface of a planar waveguide. Each dash is a binary feature placed by a computer program to serve simultaneously many channels. For realization of PBQC devices the software for generating super-gratings (GDS-II format) and 2-D simulation of its transfer function was developed. Direct e-beam writing and photolithography were used for manufacturing PBQC structures. For verification of the ideas behind the concept a number of multichannel MUX/DEMUX devices have been manufactured and experimentally tested. The results of detailed experimental study of 4- and 16-channel devices will be presented. Channel isolation ~30 dB was achieved in the 4-channel devices. The applications of PBQC platform for integrated light wave circuits are discussed.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vladimir V. Yankov, Sergey Babin, Igor Ivonin, Alexander Yu. Goltsov, Anatolii Morozov, Leonid Polonskiy, Michael Spector, Andrei Talapov, Ernst-Bernhard Kley, Holger Schmidt, and Robert P. Dahlgren "Photonic bandgap quasi-crystals for integrated WDM devices", Proc. SPIE 4989, Optical Devices for Fiber Communication IV, (17 June 2003);


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