RIN transfer suppression technique for dual-order Raman pumping schemes |
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Authors: | MD Mermelstein K Brar C Headley |
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Affiliation: | Photonics Devices Res. Dept., OFS Labs., Somerset, NJ, USA; |
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Abstract: | An optical technique is demonstrated for suppressing the relative intensity noise (RIN) transfer from a high-power second-order pump laser to the signal radiation in a copropagating dual-order Raman pumping scheme. RIN transfer suppression is accomplished by intensity-modulating a low-power semiconductor laser diode first-order pump. Measurements are presented demonstrating suppression over the entire electronic bandwidth and -20-dB suppression spanning a 23-nm optical bandwidth. This technique may facilitate the use of high-power fiber lasers in copropagating dual-order distributed Raman amplifiers. |
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