23 March 1993 Low-threshold tunable soliton source
Author Affiliations +
Abstract
An actively modelocked erbium fiber laser with continuous wavelength tuning over the range 1528 nm - 1565 nm has been demonstrated, with wavelength selection provided by a holographically ruled diffraction grating. A gain-saturated InGaAsP NTW semiconductor optical amplifier (SOA) is used as the active modelocking element in an isolating unidirectional fiber loop mirror. The semiconductor amplifier is driven with a synthesized RF signal source at a harmonic of the passive cavity mode spacing of 1.75 MHz, together with a dc bias current. The SOA is used as an amplitude modulator which provides gain and has < 2 dB polarization dependence. Gain saturation also serves to shape the transmitted laser pulses. The fiber laser is diode pumped at 1480 nm with a threshold of 6 mW, and provides pulses of 25 ps (FWHM) with a transform product of 0.4 and > 12 dBm peak power at a repetition rate of 175 MHz. Modelocked pulse repetition rates up to several GHz should be possible using this fiber laser configuration.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ciaran R. O'Cochlain, Robert J. Mears, "Low-threshold tunable soliton source", Proc. SPIE 1789, Fiber Laser Sources and Amplifiers IV, (23 March 1993); doi: 10.1117/12.141117; https://doi.org/10.1117/12.141117
PROCEEDINGS
11 PAGES


SHARE
RELATED CONTENT

In line erbium fiber laser with self rotation of the...
Proceedings of SPIE (February 15 1994)
Simple passively modelocked fiber laser oscillator
Proceedings of SPIE (February 15 1994)
A two paths mode-locked fiber laser
Proceedings of SPIE (January 07 2009)
Optical amplification and its use in communications
Proceedings of SPIE (September 01 1990)
Stable high-repetition-rate pulses from a fiber laser
Proceedings of SPIE (May 17 2001)

Back to Top