NDLI: CRIT-Alternative Narrow-Passband Waveguide Filter for Microwave Photonic Signal Processors

Content Provider	IEEE Xplore Digital Library
Author	Leimeng Zhuang Hoekman, M. Oldenbeuving, R.M. Boller, K.-J. Roeloffzen, C.G.H.
Copyright Year	1989
Abstract	This letter presents a novel use of a waveguide circuit consisting of a two-ring resonator-assisted asymmetrical Mach-Zehnder interferometer, which realizes a narrow-passband filter in the context of microwave photonics (MWP). The filter principle is an alternative to the coupled resonator induced transparency and features easy implementation and robust performance. In the experimental demonstration, such a circuit fabricated in SiO₂/Si₃N₄ waveguide technology exhibits a narrow transmission window surrounded by a region of significant suppression. The transmission window features a -3-dB bandwidth of 1 GHz and a -20-dB bandwidth of 3.5 GHz, equivalently a 20-dB roll-off enhancement of three times as compared with a regular add-drop ring resonator. In addition, the investigated waveguide circuit features full reconfigurability based on tunable phase shifters and power couplers. This allows the proposed filter functionality to be combined with other functionalities in a common device, which is of high interest for the realization of flexible on-chip MWP signal processors.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1034
Ending Page	1037
Page Count	4
File Size	1138294
File Format	PDF
ISSN	10411135
Volume Number	26
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical filters Optical waveguides Resonator filters Microwave filters Optical ring resonators Photonics microwave photonic signal processing Microwave photonic filter ring resonator Mach-Zehnder interferometer waveguide circuit
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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