Title :
A novel quasi-ellipsoidal microlenses employing a quadrangular-pyramid-shaped fiber endface
Author :
Yeh, S.M. ; Lu, Y.K. ; Lin, H.H. ; Cheng, W.H.
Author_Institution :
Inst. of Electro-Opt. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
We propose a novel quasi-ellipsoidal microlens employing a quadrangular-pyramid-shaped fiber endface (QPSFE) for the coupling between high-power 980 nm laser diodes and single mode fibers. The QPSFE was fabricated by using a grinding and polishing technique and then heating in a fusing splicer to form a quasi-ellipsoidal microlens endface. A coupling efficiency of 60% has been demonstrated. Based on the Gaussian beam approximation, a simple theoretical calculation of the effect ellipsoidal-axis and working distance on coupling efficiency is presented.
Keywords :
grinding; microlenses; optical fibre couplers; optical fibre fabrication; polishing; semiconductor lasers; splicing; 60 percent; 980 nm; Gaussian beam approximation; QPSFE; fusing splicer; grinding; laser diodes; optical coupling; optical fiber fabrication; polishing; quadrangular-pyramid-shaped fiber endface; quasi-ellipsoidal microlenses; Diode lasers; Heating; Laser beams; Lenses; Microoptics; Optical coupling;
Conference_Titel :
Lasers and Electro-Optics, 2003. CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on
Print_ISBN :
0-7803-7766-4
DOI :
10.1109/CLEOPR.2003.1277251
