Special Section on Advances in Optical Components and Subsystems for Wavelength-Division-Multiplexing CommunicationsComponents

Cascaded multimode interference phased array structures for dense wavelength division multiplexing applications

[+] Author Affiliations
Ayman Yehia

Ain Shams University, Faculty of Engineering, 1 Elsarayat Street, Abbassia, Cairo, Egypt

Diaa Khalil

Ain Shams University, Faculty of Engineering, 1 Elsarayat Street, Abbassia, Cairo, Egypt

MEMScAP Egypt, 9 Ibn Battouta Street, Heliopolis, Cairo 11341, Egypt E-mail: diaa.khalil@memscap.com

Opt. Eng. 43(5), 1060-1065 (May 01, 2004). doi:10.1117/1.1695404
History: Received Feb. 26, 2003; Revised Jan. 19, 2004; Accepted Jan. 26, 2004; Online April 19, 2004
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We propose a new approach for the design of phased array (PHASAR) demultiplexers. This approach is based on cascading multimode interference (MMI) PHASAR structures with different frequency responses to obtain an optimized performance. We show that with this approach, we can improve the uniformity of the overall demultiplexer (DMUX), especially when a large number of output ports is required. The design of a 64-output DMUX with only 0.2-dB uniformity is thus demonstrated compared to a 7-dB uniformity of a two-cascaded eight-channel demultiplexer, also shown in this work. This approach allows the designer to optimize the structure design, considering both the insertion loss and the uniformity. © 2004 Society of Photo-Optical Instrumentation Engineers.

© 2004 Society of Photo-Optical Instrumentation Engineers

Citation

Ayman Yehia and Diaa Khalil
"Cascaded multimode interference phased array structures for dense wavelength division multiplexing applications", Opt. Eng. 43(5), 1060-1065 (May 01, 2004). ; http://dx.doi.org/10.1117/1.1695404


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