Optically controllable dual-mode switching in single-mode Fabry-Perot laser diode subject to one side-mode feedback and external single mode injection

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In this paper, broadly tunable dual-mode lasing system is presented and demonstrated based on single-mode Fabry-Perot laser diode subject to the feedback of one side mode amplified by an erbium-doped fiber amplifier in the external feedback cavity. The spacing between two resonance modes in output lasing spectrum is broadly tuned by introducing differently amplified side mode into the single-mode laser via the external cavity consisted of amplifier, filter, and polarization controller so that two difference frequencies of 1 THz and 0.6 THz are given to display the tunable behavior of dual-mode emission in this work. Therefore, under an external injection mode into the laser condition, the power dependent injection locking and optical bistability of generated dual-mode emission are discussed in detail. At different wavelength detunings, the emitted two resonance modes including the dominant and feedback modes are switched to on- or off-state by selecting proper high-low power level of the external injection mode. As a consequence, the maximum value of achieved dual-mode on-off ratio is as high as up to 45 dB.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2017-06
Language
English
Article Type
Article
Keywords

PHOTONIC CRYSTAL; MILLIMETER-WAVE; GENERATION; LOCKING; LIMITATIONS; MODULATION; CAVITY; GAIN

Citation

OPTICS COMMUNICATIONS, v.393, pp.66 - 71

ISSN
0030-4018
DOI
10.1016/j.optcom.2017.02.004
URI
http://hdl.handle.net/10203/223818
Appears in Collection
EE-Journal Papers(저널논문)
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