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Cost effective polymer optical couplers based on multimode interference techniques

Ibrahim, Mohd Haniff and Mohd Kassim, Norazan and Mohammad, Abu Bakar (2007) Cost effective polymer optical couplers based on multimode interference techniques. Journal of Optoelectronics and Advanced Materials, 9 (7). pp. 2133-2137. ISSN 1454-4164

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Abstract

Weakly guiding Multimode Interference (MMI) optical splitters and cross couplers based on photodefinable BenzoCyclobutene (BCB 4024-40) polymer are presented for the first time. The devices are designed based on three interference mechanisms of MMI and fabricated on BK7 glass substrate with a thin layer of SiO2 as cover. A cost effective chemical etching technique is used in the fabrication process to take advantage of the photosensitive nature of the polymer. The waveguide loss is measured using the cut-back method to be 3.5 dB/cm. The fabricated symmetric power splitters are found to exhibit 0.15-0.51 dB splitting uniformity with maximum recorded insertion loss of 1.13 dB. Meanwhile, the 2×2 cross couplers are testified to demonstrate a maximum crosstalk of -17.81 dB and maximum loss of 3.37 dB.

Item Type:Article
Uncontrolled Keywords:BenzoCyclobutene polymer, Multimode interference, Optical coupler, Chemical etching technique, Polymer optical waveguide
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:6224
Deposited By: Mohd Haniff Ibrahim
Deposited On:15 Aug 2008 13:25
Last Modified:01 Jun 2010 15:40

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