Patent ID: 6636674
Filing Date: 2003-10-21
Classification: H01S

Abstract:
A figure-8 optical fiber pulse laser using a dispersion imbalanced nonlinear optical fiber loop mirror (DI-NOLM) comprising;a linear part of the figure-8 optical fiber laser composed of a pump laser diode (LD), a wavelength division multiplexing (WDM) coupler, an erbium doped fiber (EDF), an optical isolator, a band pass filter (BPF), an output coupler, a dispersion compensated fiber (DCF), and a polarization controller (PC); a nonlinear loop part, DI-NOLM, composed of a single mode fiber (SMF), a dispersion shifted fiber (DSF), and a PC; and an optical coupler combining the linear loop part and the nonlinear loop part; and wherein;the optical pulses are divided into two at the optical coupler; one of them propagates the nonlinear loop clockwise; the other propagates the loop counterclockwise; the clockwise pulses become broader at the SMF, and then pass the DSF; the counterclockwise pluses pass the DSF first, and then, become broader at the SMF; and the self-switched optical pulses are produced.