Title :
Ball-lens based optical add-drop multiplexers: design and implementation
Author :
Jiang, Wei ; Sun, Yingzhi ; Chen, Ray T. ; Guo, Baoping ; Horwitz, James ; Morey, William
Author_Institution :
Microelectron. Res. Center, Texas Univ., Austin, TX, USA
fDate :
6/1/2002 12:00:00 AM
Abstract :
Two types of ball-lens based optical add-drop multiplexers (OADMs) are designed and implemented. Insertion losses as low as 0.5 to 0.6 dB for the reflection light-path, and 1.2 to 1.5 dB for the transmission light-path are demonstrated. The 0.5-dB passband is 44% to 50% of the channel spacing and 30% to 33% of the -30-dB stopband for 100- and 200-GHz OADMs. The reflection path has an isolation of 15 dB. In addition to the distinct cost advantage of ball lenses over gradient index lenses, the ball-lens based OADMs also offer a significant simplification in packaging. The external diameter of the package is 5.5 mm.
Keywords :
lenses; multiplexing equipment; optical beam splitters; optical communication equipment; optical design techniques; optical fibre filters; optical losses; packaging; wavelength division multiplexing; 0.5 to 0.6 dB; 0.5-dB passband; 1.2 to 1.5 dB; 100 GHz; 200 GHz; 5.5 mm; ball-lens based optical add-drop multiplexers; beam-splitting ball lens; channel spacing; fiber-optic device packaging; insertion losses; optical designs; package external diameter; reflection light-path; thermally expanded-core fibers; thin-film beam-splitting filter; transmission light-path; wavelength-division multiplexing; Channel spacing; Insertion loss; Lenses; Optical add-drop multiplexers; Optical design; Optical losses; Optical reflection; Packaging; Passband; Propagation losses;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1003106
