Compact integrated optical directional coupler with large cross section silicon waveguides

J. P. George; N. Dasgupta; B. K. Das

doi:10.1117/12.854517

17 May 2010 Compact integrated optical directional coupler with large cross section silicon waveguides

J. P. George, N. Dasgupta, B. K. Das

Proceedings Volume 7719, Silicon Photonics and Photonic Integrated Circuits II; 77191X (2010) https://doi.org/10.1117/12.854517
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

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).

Citation Download Citation

J. P. George, N. Dasgupta, and B. K. Das "Compact integrated optical directional coupler with large cross section silicon waveguides", Proc. SPIE 7719, Silicon Photonics and Photonic Integrated Circuits II, 77191X (17 May 2010); https://doi.org/10.1117/12.854517

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