Reliability aspects of 980-nm pump lasers in EDFA applications

Oosenbrug, A.

doi:10.1117/12.304447

Cited by 22 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wafers were processed into the ridge-waveguide laser diodes in the same way as our 8xx devices [3] . The E2 facet passivation technology [4] provided maximum protection against catastrophic optical mirror damage (COMD), which is crucial with respect to long-term stability required in high power applications. In order to develop devices that are optimized either for high power conversion efficiency at low currents or high power performance, the laser were processed into ~94 µm wide waveguides with cavity lengths of 2.4 mm or 3.6 mm, respectively.…”

Section: Chip Design and Processingmentioning

confidence: 99%

High power pump laser diodes for 2μm fibre laser

Pawlik¹,

Todt²,

Moser³

et al. 2014

SPIE Proceedings

View full text Add to dashboard Cite

We report on our recent developments at II-VI Laser Enterprise of laser diode sources for the 79x nm range. High power conversion efficiency in excess of 62% was demonstrated. For high power applications like Thulium fiber laser pumping we have achieved an output power of more than 12.5W in CW operation for 94 µm wide broad-area single-emitters. We added the functionality of wavelength stabilization to the laser diodes by using a distributed feedback grating (DFB). Locking has been obtained over the full current range between 1A and 4A tested so far with some margin for temperature variation. For efficient fiber laser pumping the laser diodes were integrated in a multi-emitter platform, achieving 38 W out of a 105 µm fiber within 0.15 NA.

show abstract

Section: Chip Design and Processingmentioning

confidence: 99%

High power pump laser diodes for 2μm fibre laser

Pawlik¹,

Todt²,

Moser³

et al. 2014

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

“…To avoid catastrophic damage, we run the diode with 400 mA, obtaining 379 mW incident on the Nd:YVO crystal. Due to the E2-facet passivation technology [28], this single-mode laser reveals an excellent reliability at high-power densities. For a mount temperature of 24 C, the optical spectrum is centered at 808.7 nm and has a spectral linewidth below 1 nm.…”

Section: B Experimental Setupmentioning

confidence: 99%

Diode-pumped passively mode-locked Nd:YVO/sub 4/ lasers with 40-GHz repetition rate

2005

IEEE J. Quantum Electron.

View full text Add to dashboard Cite

We present two different diode-pumped passively mode-locked Nd:YVO 4 lasers with a repetition rate of 40 GHz. This is the highest repetition rate demonstrated so far with diode-pumped 1-m solid-state lasers. The first laser design allows short pulses of 2.7-ps duration whereas the second laser design is optimized for high average output power of up to 288 mW. We compare both design approaches and show that there is a tradeoff between output power and pulse duration.

show abstract

“…Usually, three major failure modes are considered as the driving mechanisms for sudden failures. Whereas catastrophic optical mirror damage (COMD) [11,12] is not observed anymore and packaginginduced failure (PIF) also has been suppressed or eliminated [13,14], most sudden failures are caused by a dislocation growth from the outside of the active region [15]. In the following, we shall assume that pump power drops instantaneously.…”

Section: Failure Scenariosmentioning

confidence: 99%

Investigation into the significance of failure rate calculations for erbium—doped fiber amplifiers in view of the reliability of communication networks

Rapp

2008

Trans Emerging Tel Tech

View full text Add to dashboard Cite

SUMMARYThis paper deals with the impact of erbium-doped fiber amplifier (EDFAs) on the reliability of communication networks. It is shown that failure rates calculated for EDFAs have only limited significance in view of the reliability of the complete network. Standard amplifier setups using a single pump per stage are compared with setups making use of pump sharing. The analysis reveals that differences with respect to downtime and mean time to repair of networks using these types of amplifiers are much smaller than it is expected from the failure rate calculations. This is due to the fact that standard amplifiers can compensate the failure of an intermediate pump for several operating conditions by increasing the power emitted by the other pumps, whereas compensation capabilities of setups based on pump sharing are strongly constrained.

show abstract

Reliability aspects of 980-nm pump lasers in EDFA applications

Cited by 22 publications

References 0 publications

High power pump laser diodes for 2μm fibre laser

High power pump laser diodes for 2μm fibre laser

Diode-pumped passively mode-locked Nd:YVO/sub 4/ lasers with 40-GHz repetition rate

Investigation into the significance of failure rate calculations for erbium—doped fiber amplifiers in view of the reliability of communication networks

Contact Info

Product

Resources

About