Measurement of the quantum efficiency of long wavelength EDFAs with and without an idler signal

Muro, R. Di; Jolley, N.E.; Mun, J.

doi:10.1109/ecoc.1998.732629

Cited by 7 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…P 978.8 and P 1490.6 represent EDFA pump and Raman pump power in the input of the Bi-EDFA respectively. Only a small amount of 978.8 nm pump power is required to reach the optimum QCE in the case where most of the Bi-EDFA power is supplied by 1490.6 nm pump power [34]. The QCE factor is calculated to be about 16% when the input and output signal powers at the wavelength 1590.6 nm are measured to be 38.72 µW and 10.85 mW, respectively and the residual powers 13.6 mW and 64 mW of the EDFA and the Raman pump respectively, are employed for pumping the inserted Bi-EDFA as used in the MFL generation in figure 3.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Effective use of an EDFA and Raman pump residual powers via a Bi-EDF in L-band multi-wavelength fiber laser generation

Shirazi¹,

Harun²,

Ahmad³

2014

Laser Phys.

View full text Add to dashboard Cite

Residual powers of an erbium-doped fiber amplifier (EDFA) and a Raman pump are utilized effectively for pumping a 0.45 m long bismuth-based EDF (Bi-EDF) in linear-cavity L-band multi-wavelength fiber laser generation. A 7.7 km dispersion compensating fiber (DCF) operates as both Brillouin and Raman gain media and a 6.5 dBm fixed-power tunable laser source (TLS) amplified by an EDFA works as a Brillouin pump (BP). By inserting the Bi-EDF in the linear cavity and using the EDFA and the fixed Raman pump residual powers 13.6 mW and 64 mW, at wavelengths 978.8 nm and 1490.6 nm respectively, the gain spectrum is inhomogeneously broadened so that linewidth of the gain spectrum is expanded from 3.4 to 12.3 nm. As a result, the number of lines of an L-band multi-wavelength fiber laser (MFL) is increased noticeably. In addition, the number of lines at a BP wavelength 1590.6 nm decreased from 38 to 32 by using the maximum EDFA pump residual power of 44 mW due to a reduction in the quantum coefficient efficiency. However, flatness and stability characteristics of the MFL are improved. The MFL can be generated in the wavelength region 1570-1610 nm with the signal to noise ratio of about 42.

show abstract

Section: Resultsmentioning

confidence: 99%

“…This situation is explained by a significant increase in the quantum conversion efficiency (QCE) of the 978.8 nm and 1490 nm pumped Bi-EDFA when the EDFA pump power of 44 mW is used [33]. The QCE factor is defined as the ratio between the amplified signal photons and the total launched pump photons [33,34]:…”

Section: Resultsmentioning

confidence: 99%