Design and demonstration of direct UV-written small angle X couplers in silica-on-silicon for broadband operation

• Main Authors: Adikan, Faisal Rafiq Mahamd, Gawith, Corin B.E., Smith, Peter G.R., Sparrow, Ian J.G., Emmerson, Gregory D., Riziotis, Christos, Ahmad, Harith
• Format: Article
• Published: Optical Society of America 2006
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.um.edu.my/4687/; https://doi.org/10.1364/AO.45.006113

Experimental demonstration of small angle (0.8 degrees-5 degrees) direct UV-written X couplers in silica-on-silicon is presented. Maximum and minimum coupling ratios of 95 (+/- 0.8) and 1.9 (+/- 1), respectively, were recorded. The structures also display very low polarization and wavelength depende...