[OPTICAL REVIEW Vol. 17, No. 4 (2010) 385-387]
© 2010 The Japan Society of Applied Physics

48.8 km Ultralong Erbium Fiber Laser in Active Mode-Locking Operation

Lúcia A. M. SAITO*, Murilo A. ROMERO1, and Eunézio A. DE SOUZA

Universidade Presbiteriana Mackenzie, Laboratório de Fotônica, Rua da Consolacão, 896-01302-907, São Paulo/SP, Brazil
1Universidade de São Paulo, Escola de Engenharia de São Carlos, Av. Dr. Carlos Botelho, 1465-13560-250, São Paulo/SP, Brazil

(Received March 6, 2010; Accepted April 15, 2010)

By the use of installed fibers inside the city we demonstrated a 48.8 km ultralong Erbium-doped fiber laser in mode-locking regime with repetition rate varying from 1–10 GHz. The shortest pulse duration of 42 ps at 2.5 GHz was obtained by optimization of intracavity dispersion.

Key words: lasers, ultralong erbium fiber lasers, mode-locked lasers

*E-mail address: thoroh@mackenzie.br