Title :
Variable ratio power splitters using computer-generated planar holograms on 2×2 multimode interference couplers
Author :
Tseng, Shuo-Yen ; Choi, Seungkeun ; Kippelen, Bernard
Author_Institution :
Center for Org. Photonics & Electron., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Variable ratio power splitters using computer-generated planar holograms on 2times2 multimode interference (MMI) couplers are presented. The coherent wave at the device input is transformed to the desired output using computer-generated refractive index perturbations on multimode channel waveguides at half the beat length. Devices are fabricated on the silicon-on-insulator platform and characterized at the wavelength of 1.55 mum. We demonstrate different splitting ratios by changing the hologram etch depth and the hologram length.
Keywords :
holography; integrated optics; optical beam splitters; optical couplers; optical fabrication; optical waveguides; computer generated planar hologram; computer generated refractive index perturbation; hologram etch; hologram length; multimode channel waveguide; multimode interference couplers; silicon-on-insulator; variable ratio power splitter; wavelength 1.55 nm; Couplers; Etching; Holographic optical components; Holography; Interference; Optical computing; Optical devices; Optical refraction; Optical variables control; Optical waveguides; (090.1760) Computer holography; (130.2790) Guided waves; (130.3120) Integrated optics devices;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8
