Switchable wavelength generation by injection-locked fiber laser based on GS-RSOAs |
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Authors: | Ku H -D Park C -S |
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Institution: | 1.School of Information and Communications, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-Gu, Gwangju, Republic of Korea ;2.Photonics Technology Institute, 5 Cheomdan 5gil, Gwangju, Republic of Korea ; |
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Abstract: | This paper proposes a switchable wavelength fiber laser (SWFL) based on an arrayed waveguide grating (AWG) and a gain-saturated
reflective semiconductor optical amplifier (RSOA). The SWFL was experimentally implemented in the C- and L-bands. In order
to achieve narrow-linewidth oscillation, the SWFL was driven by bidirectional injection-locked RSOAs. The RSOA was operated
in the gain-saturated region, using gain compression properties to obtain uniform power over a wide bandwidth. Based on this
configuration, we obtained 40 C-band international telecommunication unit (ITU) wavelengths with 100-GHz channel spacing.
The SWFL displayed a narrow 3-dB bandwidth (<0.06 nm), a high and uniform peak power (P
max > 0.22 dB, ΔP
max < 0.26 dB), and a high and uniform side mode suppression ratio (SMSR > 66 dB, ΔSMSR < 1 dB). The peak-power and wavelength
stabilities were ±0.24 dB and ±0.01 nm, respectively, at room temperature over a 1 h period. |
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Keywords: | |
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