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High power C+L-band Erbium ASE source using optical circulator with double-pass and bi-directional pumping configuration

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Abstract

We have proposed and demonstrated a high-power C+L-band erbium amplified spontaneous emission source using an optical circulator with double-pass and bi-directional configuration, which can provide a high output power of 177.8 mW with a ripple of 5 dB and a wide line width of 81.0 nm (1525.1–1606.1 nm) without adding any external spectra-flattening components. This designed configuration is also considered relaxing resonant lasing for averaged power stability with ±0.013 dB, allowing high pumping efficiency of 32.8%.

©2004 Optical Society of America

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Figures (7)

Fig. 1.
Fig. 1. Proposed double-pass and bi-directional configuration for high-power C+L-band ASE source
Fig. 2.
Fig. 2. Optimum C+L-band ASE spectra for different 980 nm and 1480 nm pumping powers.
Fig. 3.
Fig. 3. C+L-band ASE spectra generated by two 980 nm LDs with 250 mW each incorporating different 1480 nm pumping powers.
Fig. 4.
Fig. 4. C+L-band ASE spectra generated by two 980 nm LDs with 100 mW each incorporating different 1480 nm pumping powers.
Fig. 5.
Fig. 5. Measured characteristics of output power and power ripple against 980 nm and 1480 nm pumping power.
Fig. 6.
Fig. 6. Measured characteristics of pumping efficiency and linewidth against 980 nm and 1480 nm pumping power.
Fig. 7.
Fig. 7. Measured stability of output power in the temperature cycle of 20–30 °C.

Tables (1)

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Table.1. Summarized table of optimum pumping powers for proposed configuration

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