Dual wavelength optical duobinary modulation using GaAs–AlGaAs microring resonator

Amiri, Iraj Sadegh; Zakaria, Rozalina; Anwar, Toni; Bahadoran, Mahdi; Vigneswaran, D.; Yupapin, P.

doi:10.1016/j.rinp.2018.11.016

Cited by 14 publications

(4 citation statements)

References 20 publications

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“…Te TPA is absent due to its high band gap. Te thermo-optic efects are intended to be suppressed by the application of the athermal condition (12). Te ability to efciently tune Si 3 N 4 using the electro-optic (EO) efect is enhanced by depositing a layer of graphene on top of the core to get a material platform cumulating low loss, high nonlinearity, and highly efcient tuning without afecting its optical performance [45].…”

Section: Methodsmentioning

confidence: 99%

“…have shown their capability in simultaneously addressing challenges such as low drive power, compactness, and a complementary metal-oxide-semiconductor (CMOS)compatibility in photonic integrated circuits. In the past, particularly for optical flters, diferent material systems including Si [8], SiN [9], InP/InGaAsP [10], AlN [11], GaAs [12], polymers [13], and chalcogenides [14] have been used to fabricate ring resonator-based devices. Te tuning mechanisms investigated in these materials include the thermo-optic efect [15], the electro-absorption efect [16], the electro-optomechanical efect [17], and the electro-optic (EO) efect [1,18].…”

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of Ultralow Voltage Graphene on the Silicon Rich Nitride Tunable Ring Resonator-Based Add-Drop Filter for DWDM Systems

Rukerandanga¹,

Musyoki

Ataro

2022

International Journal of Optics

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We propose and simulate a third-order 3D electro-optically highly tunable compact add-drop filter based on nonlinear microring resonators. The used tuning mechanism relies on enhanced Kerr nonlinearity in a graphene layer integrated on top of a two-photonabsorption-free and low loss silicon-rich nitride core material at telecommunication wavelengths. An ultrahigh tuning efficiency (150 pm/V) over a tuning range of 1.3 nm, ensuring ultralow voltage consumption, was achieved in this work. We used titanium oxide and silicon oxide as the upper-cladding and under-cladding materials, respectively, around the silicon-rich nitride core material, to come up with a polarization-insensitive, and the thermally resilient third-orderadd-drop optical filter in the L band (1565 nm–1625 nm) with a full wave at a half maximum bandwidth of 50 GHz (linewidth of 0.4 nm) around 1570 nm, a high-free spectral range of 18.5 nm, a quality factor of 2580, an extinction ratio of 60 dB, a finesse of 19, and a thermal stability of 0.3 pm/K. A three-dimensional multiphysics approach was used to simulate the propagation of transverse electric and transverse magnetic polarized waves through the filter, combining the electromagnetic features with thermo-optic and stress-optical effects. The contribution of this work to the existing literature is that the designed filter proposes a new and highly tunable material system compatible with the complementary metal-oxide-semiconductor fabrication technology while combining high tunability, polarization insensitivity, and high thermal stability features for an ultracompact and energy-efficienton-chip integrated photonic tunable filter for dense wavelength division multiplexing systems in the less occupied L band.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Ultralow Voltage Graphene on the Silicon Rich Nitride Tunable Ring Resonator-Based Add-Drop Filter for DWDM Systems

Rukerandanga¹,

Musyoki

Ataro

2022

International Journal of Optics

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“…Coupling of optical waveguides is a subject of interest in the micro-disk lasers, 18 ring resonator channel filters, 15,[19][20][21] reflective polarization volume gratings, 22 chip-scale photonic integrated circuits, 23,24 the optical sensors, [25][26][27] alignment process of packaging the coupling of light in and out of the photonics devices 28 and a variety of tasks like optical switching, 29 modulation, oscillation, dispersion compensation, wavelength-selective amplification, which are applicable in optical communication. [30][31][32] Yariv et al studied the effect of internal loss of an Erbiumdoped fiber ring resonator near critical coupling. 30 It is reported that, the mode of resonator loses an equal power to the loss mechanisms at the critical coupling condition.…”

Section: Introductionmentioning

confidence: 99%

“…This can be achieved by determining the critical coupling condition corresponded to the geometric design, coupling coefficients and the amount of losses in the resonator system. Coupling of optical waveguides is a subject of interest in the micro‐disk lasers, 18 ring resonator channel filters, 15,19‐21 reflective polarization volume gratings, 22 chip‐scale photonic integrated circuits, 23,24 the optical sensors, 25‐27 alignment process of packaging the coupling of light in and out of the photonics devices 28 and a variety of tasks like optical switching, 29 modulation, oscillation, dispersion compensation, wavelength‐selective amplification, which are applicable in optical communication 30‐32 . Yariv et al studied the effect of internal loss of an Erbium‐doped fiber ring resonator near critical coupling 30 .…”

Section: Introductionmentioning

confidence: 99%

Optimum light transmission via microring resonator under a lossy‐coupler critical coupling condition

Bahadoran

Yupapin

Amiri

2020

Micro & Optical Tech Letters

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The optical transfer function is derived for add-drop resonator (ADR) using the signal flow graph method. A critical coupling condition is calculated in the presence of loss in the coupling regions. Effect of critical coupling and coupler loss in the light transmission is studied. A limited area was determined for optimum optical transmission of ADR. We introduced a semi-empirical equation to correlate the geometric design of coupling gap with the coupling strength parameters (coupling coefficient, k, and coupling loss, γ). Achieved results can be used in optical communication technology and the photonic sensor applications.

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Improved transmission length in the presences of ambient noise and scintillation effect using duobinary modulation in 40 Gbps free space optical channel

Manzoor

et al. 2020

Micro & Optical Tech Letters

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Free space optical (FSO) communication has gained significant popularity in recent years due to large bandwidth, license‐free spectrum, high data rates, less power consumption, and low mass requirements. However, system performance strongly depends on atmospheric conditions and ambient noise. In this letter, the duobinary modulation technique is applied and the system performance is investigated in the presence of ambient noise. The system is evaluated on the basis of Q‐factor, eye diagram, input power, transmission distance, and bit error rate. A significant improvement is observed in the presence of noise while using duobinary modulation. This study exploits extensive simulations to investigate the performance of the system. All simulations are performed for a single link of FSO communication network having a data rate of 40 Gbps in the Optisystem simulator and ambient noise is created using LEDs. After the exhaustive set of simulations, a significant improvement in transmission length is observed. It is also observed that at low input power, doubinary modulation provides better results when compared with on‐off keying (OOK) format. Scintillation effect has also be observed for doubinary modulation and compared with OOK modulation format. It is concluded that doubinary modulation provides better results in the presence of low and moderate scintillation.

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Dual wavelength optical duobinary modulation using GaAs–AlGaAs microring resonator

Cited by 14 publications

References 20 publications

Design and Analysis of Ultralow Voltage Graphene on the Silicon Rich Nitride Tunable Ring Resonator-Based Add-Drop Filter for DWDM Systems

Design and Analysis of Ultralow Voltage Graphene on the Silicon Rich Nitride Tunable Ring Resonator-Based Add-Drop Filter for DWDM Systems

Optimum light transmission via microring resonator under a lossy‐coupler critical coupling condition

Improved transmission length in the presences of ambient noise and scintillation effect using duobinary modulation in 40 Gbps free space optical channel

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