Small-signal IM response of grating-terminated external cavity semiconductor lasers

Ahmed, Z.; Tucker, R.S.

doi:10.1109/2944.401235

Cited by 22 publications

(16 citation statements)

References 48 publications

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“…They also excluded chip and package parasitics and nonlinear distortion effects. Recently, several other groups have conducted research on strong feedback induced effects such as bistability, self-pulsations and anomalous spectral behavior including subharmonic generation and the appearance of narrow peaks centered around the harmonics of the cavity resonance in noise and modulation spectra [6], [7], [27]. These studies emphasised the importance of multiple reflections under strong feedback conditions.…”

Section: Introductionmentioning

confidence: 99%

“…These studies emphasised the importance of multiple reflections under strong feedback conditions. By considering multiple reflections and finite-delay effects due to passive, frequency selective feedback, Ahmed et al [27] analyzed the spectral splitting of the intensity modulation (IM) response close to the ECRF. However, their theoretical study was not self consistent as they did not solve the steady-state equations, simultaneously satisfying gain and round-trip phase conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, their theoretical treatment can be taken only as a qualitative guide for explaining the experimental results. Ahmed et al [27] also excluded noise and nonlinear distortion in their theoretical work. Extending a laser model developed by Glasser [28], Nagarajan et al [29] developed a detailed analytical model for explaining noise and modulation response under strong signal feedback conditions.…”

Section: Introductionmentioning

confidence: 99%

“…By considering the linear and nonlinear loading effects, the linear parasitic model is modeled as a nonlinear Volterra model [31]. Previous detailed studies by Nagarajan et al [25], and Ahmed et al [27], have excluded loading effects.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modeling noise and modulation performance of fiber grating external cavity lasers

Premaratne

Lowery

Ahmed³

et al. 1997

IEEE J. Select. Topics Quantum Electron.

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A detailed model is developed for analyzing fiber grating external cavity lasers for both static and small-signal modulation conditions. The chip and package parasitics and leakage current induced distortion are included. The composite system is solved analytically in the small-signal regime using a Volterra functional series expansion method. As an application of the model, a thorough analysis of the appearance of nulls close to the harmonics of the cavity resonance frequency in the noise and modulation spectra is given. We show that the appearance of these nulls can be explained using the interplay of amplitude and phase coupling between laser diode and external resonant cavity. A signal flow graph approach is introduced which identifies methods of minimizing the nulls.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modeling noise and modulation performance of fiber grating external cavity lasers

Premaratne

Lowery

Ahmed³

et al. 1997

IEEE J. Select. Topics Quantum Electron.

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“…Ahmed and Tucker [39], have shown that by optimizing the external cavity length L ext , the resonance peak spectral splitting (RPSS) from the modulation response spectra can be suppressed. Also, they have found the high coupling between active and passive cavities lead to a lack of the RPSS appearance.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the external optical cavity parameters for performance improvement of a fiber grating Fabry–Perot laser

Hisham

Abas

Mahdiraji

et al. 2015

Opt Rev

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The effects of the external optical cavity parameters (external optical cavity length (L ext ), amplitude coupling (C o ) and anti-reflection coating (ARC) reflectivity coefficients) on the noise and modulation spectra of a fiber grating Fabry-Perot laser are numerically analyzed for designing a laser that operates in strong feedback regime (Regime V). Fiber Bragg grating (FBG) is used as a wavelength selective element to control the properties of the laser output by controlling the external optical feedback (OFB) level. The study is performed by modifying a set of rate equations that are solved by considering the effects of external OFB and ambient temperature (T) variations. We proposed a model to calculate the temperature dependence (TD) of laser characteristics according to the TD of laser parameters. An accurate analytical expression for the TD of threshold carrier density (N th,fe ) has been derived. The TD of N th,fe was calculated according to the TD of laser cavity parameters instead of using well-known empirical Pankove relationship via the use of characteristics temperature (T o ) and current (I o ). Results show that the optimum external fiber length (L ext ) is 3.1 cm. Also, it is shown that ARC with reflectivity value of 1 9 10 -2 is sufficient for the laser to operate at low noise, good modulation response, and low fabrication complexity.

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Influence of the optical feedback on the large signal modulation characteristics of the external cavity semiconductor laser

Deng

Xia

2006

J Mater Sci: Mater Electron

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Small-signal IM response of grating-terminated external cavity semiconductor lasers

Cited by 22 publications

References 48 publications

Modeling noise and modulation performance of fiber grating external cavity lasers

Modeling noise and modulation performance of fiber grating external cavity lasers

Optimizing the external optical cavity parameters for performance improvement of a fiber grating Fabry–Perot laser

Influence of the optical feedback on the large signal modulation characteristics of the external cavity semiconductor laser

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