Title :
Silica-based optical integrated circuits
Author :
Li, Y.P. ; Henry, C.H.
Author_Institution :
Lucent Technol. Bell Labs., Norcross, GA, USA
fDate :
10/1/1996 12:00:00 AM
Abstract :
Silica-based integrated optical waveguide technology is reviewed. Low loss and manufacturable waveguides are made by chemical vapour, flame hydrolysis and electron beam deposition. Fibre to fibre insertion loss is as low as 0.3 dB for a 6 cm long waveguide. Bragg reflective add-drop filters are made with gratings formed by ultraviolet irradiation. The waveguide grating router has found important application as a multiplexer in dense wavelength multiplexed communications systems. Multiplexers with wide pass bands and stop bands are made with Fourier filters: these filters consist of a chain of alternating couplers and delaying arms. The good performance of waveguide grating routers and Fourier filters is due to the high degree of path delay and coupler control achievable by and processing in this technology
Keywords :
band-pass filters; band-stop filters; diffraction gratings; electron beam deposition; integrated optoelectronics; multiplexing equipment; optical communication equipment; optical fabrication; optical filters; optical losses; optical planar waveguides; photolithography; reviews; silicon compounds; telecommunication network routing; vapour phase epitaxial growth; wavelength division multiplexing; 0.3 dB; 6 cm; Bragg reflective add-drop filters; Fourier filters; SiO2; alternating couplers; chemical vapour deposition; coupler control; delaying arms; dense wavelength multiplexed communications systems; electron beam deposition; fibre to fibre insertion loss; flame hydrolysis; gratings; low loss manufacturable waveguides; multiplexer; path delay; review; silica-based integrated optical waveguide technology; silica-based optical integrated circuits; stop bands; ultraviolet irradiation; waveguide grating router; wide pass bands;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:19960840
