Reflective Semiconductor Optical Amplifier Direct Modulation Capability Enhancement Using Birefringent Fiber Loop

Rizou, Zoe V.; Zoiros, Kyriakos E.; Rampone, Thierry; Sharaiha, Ammar

doi:10.3390/app10155328

Cited by 11 publications

(9 citation statements)

References 46 publications

(68 reference statements)

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“…The validity of the theoretical outcomes is further supported by the excellent matching between the calculated and measured Amplitude Difference (AD) level between encoded marks. In fact, the model predicts that AD is dropped from 1.21 dB after the RSOA to 0.10 dB after the BFL, or by 1.11 dB, while in the experiment the corresponding AD was 1.55 dB vs. 0.34 dB, or a reduction by 1.21 dB [21]. Therefore, the model correctly and accurately captures the change of the RSOA AD, which is made acceptable owing to the BFL action.…”

Section: Model Validation and Resultsmentioning

confidence: 78%

“…The model formulated in Section 2 is validated by a comparison to experimental data available from [21].…”

Section: Model Validation and Resultsmentioning

confidence: 99%

“…In [17], we concisely derived this response using and combing material from the relevant references cited therein that have suitably applied small-signal analysis. For the sinusoidal modulation current used when this response was measured experimentally [21], the RSOA E/O transfer function is reduced to T RSOA (ω) = D(0)/2D(ω), where D(ω) = 3. From this figure, we note that the simulated curve indeed exhibits the low-pass filter characteristic of directly modulated RSOAs [26].…”

Section: Model Validation and Resultsmentioning

confidence: 99%

“…This approach is simple in concept, all-optical in nature, straightforward to apply, efficient in use and amenable to implementation by employing different technologies [10][11][12][13][14][15][16][17]. In this context, we have proposed applying the specific technique by means of a Birefringent Fiber Loop (BFL), which is characterized by the ease of construction from off-the-shelf fiber components, a potentially stable operation, and flexibly tunable characteristics, first to conventional SOAs [18][19][20] and more recently to RSOAs as well [21]. 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.…”

Section: Introductionmentioning

confidence: 99%

“…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]. Second, we want to to assess and quantify the performance of the scheme and the potential range of RSOA bandwidth extension enabled by the BFL.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Model Validation and Resultsmentioning

confidence: 78%

“…The model formulated in Section 2 is validated by a comparison to experimental data available from [21].…”

Section: Model Validation and Resultsmentioning

confidence: 99%

Section: Model Validation and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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Principles and Development of Optical Amplifiers

2024

Handbook of Optical Wireless Communication

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Performance optimization of RSOA based mm-wave radio-over-fibre access network

Udvary

2021

Opt Quant Electron

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In this paper, a Reflective Semiconductor Optical Amplifier based, Radio-over-Fibre access network configuration has been proposed to feed future millimeter-wave radio systems. The system architecture combines several approaches to overcome the challenges of millimeter-wave signal transmission. Reflective semiconductor optical amplifier modulator realizes a colorless and relatively cost-effective Remote Antenna Unit. The same optical carrier is used for both downlink and uplink. Optical single-sideband modulation is used at the downlink, which is robust against chromatic dispersion, but the complex realization of this modulation format is not possible at the Remote Antenna Unit. Optical intermediate frequency transmission is applied at the uplink direction, and the required local oscillator signal originates from the central station. The critical element is the reflective optical amplifier, as it compensates for the optical loss and works as an external intensity modulator. The operation of the reflective optical amplifier is modeled by multisection rate and wave equation-based description. The amplification and modulation behaviors of an available reflective optical amplifier are also measured. The experimental work validated the colorless operation and the quality of the modulation versus bias current and input optical power. Finally, system simulation was realized. The uplink and downlink power budgets were balanced, and optimal values for the optical coupling rate and RSOA bias current have been selected.

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Reflective Semiconductor Optical Amplifier Direct Modulation Capability Enhancement Using Birefringent Fiber Loop

Cited by 11 publications

References 46 publications

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

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

Principles and Development of Optical Amplifiers

Performance optimization of RSOA based mm-wave radio-over-fibre access network

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