Design and Fabrication of a Glass Waveguide Optical Add–Drop Multiplexer by Use of an Amorphous-Silicon Overlay Distributed Bragg Reflector
Applied Optics, Vol. 43, Issue 3, pp. 671-677 (2004)
http://dx.doi.org/10.1364/AO.43.000671
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Abstract
We report the fabrication of a distributed Bragg reflector (DBR) on a silver ion-exchanged glass waveguide with a patterned overlay of sputter-deposited amorphous silicon (a-Si). Using this high-refractive-index overlay DBR technology, we demonstrate a fully functional glass-integrated optic add-drop multiplexer (OADM). The OADM consists of a Mach-Zehnder interferometer (MZI) containing overlay DBR gratings in both arms. The design, fabrication, and characterization procedures of the sputter-deposited a-Si overlay DBR and the ion-exchanged glass waveguide MZI are discussed in detail. The completed 3-cm-long OADM exhibited a 24-dB transmission dip with a 3-dB bandwidth of 0.5 nm. The 1-cm-long a-Si overlay DBR induced an additional attenuation of 1.2 dB. A simplified method for overlay DBR fabrication that utilizes a lift-off technique is also proposed and demonstrated.
© 2004 Optical Society of America
OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.4230) Fiber optics and optical communications : Multiplexing
(130.0130) Integrated optics : Integrated optics
(130.3120) Integrated optics : Integrated optics devices
(310.0310) Thin films : Thin films
(310.1860) Thin films : Deposition and fabrication
Citation
Jaeyoun Kim, Guangyu Li, and Kim A. Winick, "Design and Fabrication of a Glass Waveguide Optical Add–Drop Multiplexer by Use of an Amorphous-Silicon Overlay Distributed Bragg Reflector," Appl. Opt. 43, 671-677 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-3-671
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