Injection Current Dependent Single-Mode Fiber Coupling of a DBR Tapered Diode Laser Beam
D. Jedrzejczyk1, P. Asbahr2, M. Pulka2, B. Eppich1, and K. Paschke1
Published in:
IEEE Photonics Technol. Lett., vol. 28, no. 8, pp. 876-879 (2016).
Abstract:
In this work, we investigate experimentally the influence of injection current induced beam astigmatism change in a distributed Bragg reflector (DBR) tapered diode laser on launching of its nearly diffraction limited, simple astigmatic laser beam into a single-mode fiber (SMF). In particular, the optical power and the laser beam properties in front and behind the SMF are examined in dependence on the current injected into the taper section of the diode laser. The fiber coupling measurements are conducted at two fixed configurations of the applied optical system, each of which is optimized for a different taper current value. A maximum power of 3.5 W ex SMF at a coupling efficiency of 67% is reached.
1 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany
2 FCC FibreCableConnect GmbH, Max-Planck-Str. 3, 12489 Berlin, Germany
Index Terms:
tapered diode laser, DBR laser, optical fiber coupling, single-mode fiber, single-mode laser.
© Copyright 2016 IEEE - All Rights Reserved. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Full version in pdf-format.