Measurement and analysis of pump-dependent refractive index and dispersion effects in erbium-doped fiber amplifiers

Fleming, Simon; Whitley, T.J.

doi:10.1109/3.517009

Cited by 48 publications

(16 citation statements)

References 6 publications

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“…A frequency shift of up to 1090 kHz was observed for an increment of 100 mW, as is evident from figure 3. This effect has previously been used to stabilise a waveguide laser cavity with a repetition rate of 750 MHz in conjunction with a piezo-controlled SESAM [23] to achieve a timing jitter of 14 fs and was attributed to atomic dispersion [27] which should reduce the refractive index for the lasing wavelength at higher powers. It should also be noted that, the thermo-optic coefficient (dn/dT) for the glass is negative.…”

Section: Mode-locking Resultsmentioning

confidence: 99%

A diode-pumped 1.5 μm waveguide laser mode-locked at 6.8 GHz by a quantum dot SESAM

et al. 2013

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Abstract. We report a passively mode-locked, diode-pumped waveguide laser operating in the 1.5 m spectral region using a quantum dot SESAM as the saturable absorber element. A repetition rate of up to 6.8 GHz and an average power as high as 30 mW is obtained during mode-locked operation. Minimum pulse duration of 2.5 ps is produced at a wavelength of 1556 nm. The repetition rate of the source was tuned by more than 1 MHz by changing the pump power, demonstrating a possible route towards integrated pulse repetition rate stabilisation.

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Section: Mode-locking Resultsmentioning

confidence: 99%

A diode-pumped 1.5 μm waveguide laser mode-locked at 6.8 GHz by a quantum dot SESAM

et al. 2013

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“…Any change in refractive index would imply a change in the GVD parameter. As a consequence, β 2 is reported to vary between ±3000 ps 2 km −1 , with several oscillations about zero between 1520 and 1555 nm [30,34]. In this paper, we attempt to numerically estimate the changes in pulse propagation between the forward and bidirectional pumping schemes, for a representative value of high nonlinear refractive index.…”

Section: Effect Of Bidirectional Pumping On Pulsed Signalsmentioning

confidence: 99%

“…Any change in α is accompanied by a change in the refractive index. Nonlinear Kramer-Kronig relations [29][30][31] can be used to relate the change in refractive index ( n) to the change in the absorption coefficient ( α), caused due to some perturbation, ξ , as…”

Section: Effect Of Bidirectional Pumping On Pulsed Signalsmentioning

confidence: 99%

Influence of bidirectional pumping in high-power EDFA on single-channel, multichannel and pulsed signal amplification

Deepa

Vijaya

2008

Optical Fiber Technology

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“…It should be noted that because ϵ 0 j and ϵ 00 j are linked to each other via the Kramers-Kronig relations, the inclusion of gain to the system would impose a change on ϵ 0 j [32]. However, this change is extremely small and can be safely neglected [32][33][34].…”

Section: Spp Modes Guided By Planar Heterostructuresmentioning

confidence: 95%

Optimizing the design of planar heterostructures for plasmonic waveguiding

2012

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We theoretically investigate planar heterostructures for subwavelength guiding of surface plasmon modes and optimize their design to enhance the waveguiding efficiency. We show that by appropriately selecting the thicknesses of metallic and dielectric layers of a two-layer waveguide, one can compensate the intrinsic damping of the mode by having minimal optical gain in the dielectric region. We also reveal that mode confinement can be significantly improved by the use of an additional metal layer adjacent to the dielectric, to form a metaldielectric-metal (MDM) structure. By varying the layer thicknesses in the MDM waveguide, we demonstrate that the propagation length of the plasmonic mode can be maximized. We further show that the losses may be suppressed by minimal gain in the dielectric region by the careful choice of geometrical parameters. We note that the associated gain levels are relatively small; for example, the losses in a 300 nm thick Ag-ZnO-Ag waveguide can be compensated by a gain of ∼225 cm −1 . Our results may prove useful for the realization of efficient optical interconnects in high-density nanophotonic circuity.

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Measurement and analysis of pump-dependent refractive index and dispersion effects in erbium-doped fiber amplifiers

Cited by 48 publications

References 6 publications

A diode-pumped 1.5 μm waveguide laser mode-locked at 6.8 GHz by a quantum dot SESAM

A diode-pumped 1.5 μm waveguide laser mode-locked at 6.8 GHz by a quantum dot SESAM

Influence of bidirectional pumping in high-power EDFA on single-channel, multichannel and pulsed signal amplification

Optimizing the design of planar heterostructures for plasmonic waveguiding

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