Chu LIU^1,2,3*, Fan ZHANG^1,2, Chuncan WANG^1,2, Yuchun LU^1,2, Rui GENG⁴, and Shuisheng JIAN^1,2

¹Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China ²Key Lab of All Optical Network and Advanced Telecommunication Network of EMC, Beijing Jiaotong University, Beijing 100044, China ³China Unicom Research Institute, Beijing 100140, China ⁴School of Instrument Science and Optoelectronic Engineering, Beijing Information Science and Technology University, Beijing 100192, China

(Received December 12, 2011; Accepted January 13, 2012)

A low-cost, easy producing and novel beam shaping system for concentration and homogenization of a high power laser diode bar (LDB) beam is demonstrated by experiment and simulation. It consists of a silica-taper array (beam shaper) and a silica-taper (beam integrator) which are fabricated by using chemical etching technique. By using this device, the output beam of LDB is reshaped to a small spot with uniform intensity and angular distributions, and could be coupled into a 200 μm silica fiber.

Key words: laser diode bar, beam shaping

^*E-mail address: 07111018@bjtu.edu.cn