[20p-H116-1~21] 3.8 Optical measurement, instrumentation, and sensor

[20p-H116-19] GHz Band Actively Mode-locked Erbium Doped Fiber Laser for Biomedical Measurement

〇Keishi Haneda¹, Samuel Choi^2,5, Fumiaki Nin^3,5, Hiroshi Hibino^3,5, Takashi Kurokawa⁴ (1.Graduate School of Science and Technology Niigata Univ., 2.Department of Electrical and Electronics Engineering, Niigata Univ., 3.School of Medicine, Department of Molecular Physiology, Niigata Univ., 4.Graduate School of Engineering, TUAT, 5.AMED-CREST, AMED)

Keywords:Fiber laser,Actively mode-locked laser,Optical pulse

An actively mode-locked Er-doped fiber laser was presented for applying to biometric measurement. The fiber ring cavity is consisted of polarization-maintaining fibers introducing LN(LiNO3) phase modulator which can modulate optical wave with GHz radio frequency signal. Pulse train driven at repetition frequency of from 202.8 MHz to 2028.4 MHz could be generated by actively harmonic mode-locking. The pulse width was estimated to be within 15 - 25 psec.