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Compact integrated optical directional couplers with symmetrically- and asymmetrically etched S-bend waveguides on SOI platform have been designed, fabricated and characterized. We have found that the directional couplers with asymmetrically etched waveguide structures can increase the device compactness to about 4 to 5 times that of the conventional symmetrically etched bend waveguide structures without compromising much on the optical loss budgets. The over all waveguide loss and loss per S-bend have been measured to be ∼ 0.5 dB/cm and ∼ 1 dB, respectively. The directional couplers are found to be polarization dependent (up to ∼ 2 dB) and nearly wavelength independent (1510 nm < λ < 1600 nm). © 2010 Copyright SPIE - The International Society for Optical Engineering.
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Journal | Data powered by TypesetProceedings of SPIE - The International Society for Optical Engineering |
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Publisher | Data powered by TypesetSPIE |
ISSN | 0277786X |
Open Access | No |