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
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 2Ã—2 cross couplers are testified to demonstrate a maximum crosstalk of -17.81 dB and maximum loss of 3.37 dB.
|Uncontrolled Keywords:||BenzoCyclobutene polymer, Multimode interference, Optical coupler, Chemical etching technique, Polymer optical waveguide|
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering|
|Deposited By:||Mohd Haniff Ibrahim|
|Deposited On:||15 Aug 2008 13:25|
|Last Modified:||01 Jun 2010 15:40|
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