Title :
5-Gbit/s BER performance on an all fiber-optic add/drop device based on a taper-resonator-taper structure
Author :
Cai, M. ; Hedekvist, P.O. ; Bhardwaj, A. ; Vahala, K.
Author_Institution :
Dept. of Appl. Phys., California Inst. of Technol., Pasadena, CA, USA
Abstract :
We present an all fiber-optic add/drop device based on a taper-resonator-taper structure with improved characteristics. Several gigahertz bandwidths are observed using microspheres having diameters ranging from 30 to 50 μm. Extinction ratios as high as 26 dB of the dropped channel are obtained due to nearly ideal coupling and phase matching between the fiber tapers and the small resonator. This is the first time that bit-error rate (BER) measurements have been performed on such couplers. For a device with an optical bandwidth of 3.8 GHz, the BER shows less than 2-dB penalty at 5 Gbit/s and no signs of an error floor.
Keywords :
micro-optics; micromechanical resonators; optical communication equipment; optical fibre couplers; optical phase matching; optical resonators; 3.8 GHz; 30 to 50 mum; 5 Gbit/s; Gbit/s BER performance; all fiber-optic add/drop device; error floor; extinction ratios; gigahertz bandwidths; microspheres; nearly ideal coupling; optical bandwidth; phase matching; small resonator; taper-resonator-taper structure; Bandwidth; Bit error rate; Extinction ratio; Optical devices; Optical fiber couplers; Optical fiber devices; Optical frequency conversion; Optical resonators; Performance evaluation; Time measurement;
Journal_Title :
Photonics Technology Letters, IEEE
