Title :
Single-mode optical fiber coupling of high-power tapered gain region devices
Author :
Livas, J.C. ; Chinn, S.R. ; Kintzer, E.S. ; Walpole, J.N. ; Wang, C.A. ; Missaggia, L.J.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
fDate :
3/1/1994 12:00:00 AM
Abstract :
A simple method for collimating the optical output of a tapered gain region amplifier or laser and coupling to a single-mode optical fiber is described, along with a technique for quantitatively assessing the expected coupling efficiency. By using a tapered laser, 840 mW at 980 mm was coupled into single-mode fiber with 44% efficiency measured from fiber input to available internal fiber power, in excellent agreement with the 48% predicted. When transmission losses of the collimating optics are included, the power coupling efficiency referred to the laser facet power is 32%.<>
Keywords :
optical collimators; optical couplers; optical fibres; optical losses; semiconductor lasers; 32 percent; 44 percent; 48 percent; 840 mW; 980 nm; amplifier; collimating optics; coupling efficiency; fiber input; fibre coupling; high-power tapered gain region devices; internal fiber power; laser; laser facet power; optical output collimation; power coupling efficiency; single-mode optical fiber coupling; tapered gain region; tapered laser; transmission losses; Fiber lasers; Optical collimators; Optical coupling; Optical fiber amplifiers; Optical fibers; Optical losses; Power lasers; Power measurement; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
