Title :
Lens aberration effect on a laser-diode-to-single-mode-fibre coupler
Author :
Sumida, M. ; Takemoto, Kazuya
Author_Institution :
NTT Yokosuka Electrical Communication Laboratory, Yokosuka, Japan
Abstract :
The ball lens aberration effect has been analysed on a laser-diode-to-single-mode-fibre coupler. The analysis derived valuable relations between coupling efficiency and lens parameters of refractive index and focal length. Coupling efficiency of about 50% can be obtained for couplers which employ ball lenses with high refractive index.
Keywords :
aberrations; lenses; optical couplers; optical fibres; semiconductor junction lasers; ball lens aberration effect; coupling efficiency; focal length; laser-diode-to-single-mode-fibre coupler; optical couplers; optical fibre; refractive index;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820402
