Performance tolerance analysis of birefringent fiber loop for semiconductor optical amplifier pattern effect suppression

Rizou, Zoe V.; Zoiros, Kyriakos E.; Hatziefremidis, Antonios; Connelly, Michael J.

doi:10.1007/s00340-015-6051-y

Cited by 8 publications

(5 citation statements)

References 48 publications

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“…Similarly, the calculated MRR radius complies with the permissible range of values specified for this parameter from the study in [33]. Furthermore, ∆τ and R are such that the filtered-out data pulses retain their initial shape, as addressed in [15,29] and verified again below. Having determined the FSR of the ODI and MRR, the next step is to do the same for their detuning.…”

Section: Odi Vs Mrr Comparison Rationalementioning

confidence: 91%

“…In practice, in order to ensure a PNCR over 20 dB, the deviation from the perfect 3-dB splitting ratio must be kept within 10% [29]. This tolerance is satisfiable with the coupling technology employed both in the fiber [79] and the waveguide [80] versions of the ODI.…”

Section: Odi Vs Mrr Qualitative Comparisonmentioning

confidence: 99%

“…For the ODI, the FSR can be adjusted either statically, by fixing the path length imbalance, which can be of the order of um, between the ODI upper and lower arms, or dynamically, by using an optical delay line [32]. In the first case, a precise construction is required, but which is compensated by the reduction in footprint [74], while in the second case, a wide range of relative delays can be offered with fine resolution at the expense of a more bulky configuration [29]. For the MRR, the FSR can be readily set by choosing the MRR radius, which can be down to the micrometer scale using high index contrast waveguide materials [40,75].…”

Section: Odi Vs Mrr Qualitative Comparisonmentioning

confidence: 99%

“…During last few years, we have applied the optical filtering technique for SOA pattern effect suppression by means of a platform comprised of different notch filters [15,[28][29][30][31][32][33]. Among these filters, we particularly distinguish the optical delay interferometer (ODI) [30][31][32] and the microring resonator (MRR) [33], which share several common features, such as an all-optical and passive nature, simple structure, compatibility both with fiber medium and microelectronic fabrication processes, compact size, periodic and tunable transfer function and potential for integration and co-packaging with the SOA in a single module.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Basic Notch Filters for Semiconductor Optical Amplifier Pattern Effect Mitigation

2017

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Abstract:We conduct a thorough comparison of two basic notch filters employed to mitigate the pattern effect that manifests when semiconductor optical amplifiers (SOAs) serve linear amplification purposes. The filters are implemented using as the building architecture the optical delay interferometer (ODI) and the microring resonator (MRR). We formulate and follow a rational procedure, which involves identifying and applying the appropriate conditions for the filters' spectral response slope related to the SOA pattern effect suppression mechanism. We thus extract the values of the free spectral range and detuning of each filter, which allow one to equivocally realize the pursued comparison. We define suitable performance metrics and obtain simulation results for each filter. The quantitative comparison reveals that most employed metrics are better with the MRR than with the ODI. Although the difference in performance is small, it is sufficient to justify considering also using the MRR for the intended purpose. Finally, we concisely discuss practical implementation issues of these notch filters and further make a qualitative comparison between them in terms of their inherent advantages and disadvantages. This discussion reveals that each scheme has distinct features that render it appropriate for supporting SOA direct signal amplification applications with a suppressed pattern effect.

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Section: Odi Vs Mrr Comparison Rationalementioning

confidence: 91%

Section: Odi Vs Mrr Qualitative Comparisonmentioning

confidence: 99%

Section: Odi Vs Mrr Qualitative Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison of Basic Notch Filters for Semiconductor Optical Amplifier Pattern Effect Mitigation

2017

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“…In this paper, we further elaborate on this topic with dual purpose: First, we aim to validate and establish a model for robustly simulating the operation of the RSOA-BFL combination. This is achieved by describing the RSOA response in the time domain using a mathematically and computationally reduced model [22,23], and correlating it with the BFL response in the frequency domain [24]. The model's results are then extensively compared against the experimental ones reported in [21].…”

Section: Introductionmentioning

confidence: 99%

On Directly Modulated Reflective Semiconductor Optical Amplifier with Assistance of Birefringent Fiber Loop

et al. 2022

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Reflective Semiconductor Optical Amplifiers (RSOAs) are essential devices for the development of new generation networks that rely on the convergence of optical and RF communications. Despite their proven potential for direct modulation, RSOAs’ electro-optic response is limited by their finite bandwidth, which hinders their employment both for signal amplification and modulation at the data rates envisioned by the target applications. In this paper, we elaborate on exploiting a Birefringent Fiber Loop (BFL) to enhance the operation of RSOAs as intensity modulators. We apply a mathematically and computationally reduced model to simulate the RSOA response in the time domain, and correlate it with that of the BFL in the frequency domain. We validate the model’s predictions by an extensive comparison of the simulation against experimental results. The reasonable theoretical findings allow us to establish the employed model as an efficient tool for describing electrically driven RSOA operation and its improvement by means of optical notch filtering. Furthermore, we evaluate and quantify the performance of the scheme and the potential range of RSOA direct modulation capability extension enabled by the BFL, which complies with the experimentally observed trends. The outcomes of this thorough study highlight the BFL supportive role in rendering feasible RSOAs’ direct modulation at data rates beyond those deemed possible by their nominal modulation bandwidth.

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Semiconductor optical amplifier direct modulation with double-stage birefringent fiber loop

et al. 2016

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Performance tolerance analysis of birefringent fiber loop for semiconductor optical amplifier pattern effect suppression

Cited by 8 publications

References 48 publications

Comparison of Basic Notch Filters for Semiconductor Optical Amplifier Pattern Effect Mitigation

Comparison of Basic Notch Filters for Semiconductor Optical Amplifier Pattern Effect Mitigation

On Directly Modulated Reflective Semiconductor Optical Amplifier with Assistance of Birefringent Fiber Loop

Semiconductor optical amplifier direct modulation with double-stage birefringent fiber loop

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