Characterization of small-signal intensity modulation of single-mode fiber grating Fabry-Perot laser source

Hisham, Hisham; Abas, Ahmad Fauzi; Mahdiraji, Ghafour Amouzad; Mahdi, Mohd Adzir; Noor, A. S. M.

doi:10.1007/s10043-012-0014-x

Cited by 8 publications

(5 citation statements)

References 35 publications

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“…Opt Rev where a tot,fe (T)is the TD total cavity loss that is defined as [24][25][26][27][28][29][30].…”

Section: Fiber Grating Fabry-perot Laser Modelmentioning

confidence: 99%

“…The second section is a fiber of length L ext , and the third is the FBG with This configuration may be conveniently analyzed as a simple two-mirror laser structure (Fig. 1b) by replacing the FP diode laser output facet reflectivity R o by a complexvalued effective reflection coefficient R eff [24][25][26][27][45][46][47].…”

Section: Fiber Grating Fabry-perot Laser Modelmentioning

confidence: 99%

“…In recent years, fiber grating Fabry-Perot (FGFP) laser is proposed as an alternative light source for WDM systems, which can generate output with high wavelength stability [23][24][25][26][27][28][29][30]. This is because the emission wavelength of FGFP laser depends only on the Bragg wavelength of fiber grating (FG), thus, independent of chip temperature and injection current.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, precise adjustment of the Bragg wavelength in FG is easier in comparison to the emission wavelength of DFB lasers. The main advantages of a SLD with external FG resonator are high-speed direct modulation with low chirping effect, enhanced wavelength stability, and relatively cost effective [6,9,13,16,21,[23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

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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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“…Opt Rev where a tot,fe (T)is the TD total cavity loss that is defined as [24][25][26][27][28][29][30].…”

Section: Fiber Grating Fabry-perot Laser Modelmentioning

confidence: 99%

Section: Fiber Grating Fabry-perot Laser Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Hisham

Abas

Mahdiraji

et al. 2015

Opt Rev

Self Cite

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“…On the other hand, the incessant increase in the users of optical communication systems demands for very high speed data transmission [11,12]. Having the ability of high speed modulation, semiconductor laser diodes (SLDs) become an excellent option for wavelength division multiplexing (WDM) systems.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Analysis for Optimizing the Gratings Length and Coupling Coefficient for High Reflectivity and Low Cavity Loss in Fiber Grating Fabry-Perot Laser Model

Hisham¹

2016

PHY

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The effects of gratings length (kLFG) and amplitude coupling (Co) coefficients on the effective reflectivity (Reff) and the total cavity loss (αtot) of an external cavity laser source (ECLS) based fiber Bragg gratings (FBGs) are numerically analyzed for designing a laser source operating in strong feedback regime (Regime V). In this study, FBG is used as a wavelength selective element to control the properties of the laser output by controlling the fiber gratings reflectivity level. The study is performed by modifying full analytical expressions for the Reff and the αtot based on laser coupled-wave equations. Results show that Reff is strongly dependent on kLg and Co. Also, it is found that αtot has been reduced significantly with increasing Co, especially at high value for kLG (kLFG> 1.5).

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Linewidth characteristics of un-cooled fiber grating Fabry–Perot laser controlled by the external optical feedback

Hisham

Abas

Mahdi

et al. 2013

Optik

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The effect of external optical feedback (OFB) on the linewidth characteristics of un-cooled laser module is theoretically investigated. This laser that consists of a Fabry-Perot (FP) laser diode and fiber Bragg grating (FBG) realizes stable operation and relatively low-cost solution. The effects of external OFB and temperature on linewidth are calculated according to their effect on threshold carrier density (Nth). The temperature dependence (TD) of linewidth characteristics is calculated according to TD of laser parameters instead of wellknown Parkovin relationship. Results show that, linewidth decreases as the external OFB reflectivity (Rext) increases. A narrow linewidth which is less than 3 kHz is obtained for Rext ≥ 0.5. In addition, the linewidth is not largely affected by temperature as compared to the DFB lasers. Also, we found that the linewidth temperature coefficient is 0.04 kHz/°C, which is small enough in comparison to 18.5 kHz/°C for the DFB laser.

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Characterization of small-signal intensity modulation of single-mode fiber grating Fabry-Perot laser source

Cited by 8 publications

References 35 publications

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

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

A Numerical Analysis for Optimizing the Gratings Length and Coupling Coefficient for High Reflectivity and Low Cavity Loss in Fiber Grating Fabry-Perot Laser Model

Linewidth characteristics of un-cooled fiber grating Fabry–Perot laser controlled by the external optical feedback

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