Multi-wavelength source using low drive-voltage amplitude modulators for optical communications

Healy, T.; Gunning, Fatima C. Garcia; Ellis, A.D.; Bull, J.D.

doi:10.1364/oe.15.002981

Cited by 107 publications

(43 citation statements)

References 13 publications

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“…A number of techniques have been proposed for the generation of OFCs such as using cascaded intensity and/or phase modulators [7], [8], fibre or semiconductor based ring-cavity mode-locked lasers [9], [10], direct modulation of gain-switched discretemode lasers [11], and semiconductor mode-locked lasers [12].…”

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confidence: 99%

Optical Frequency Comb Generation Using Dual-Mode Injection-Locking of Quantum-Dash Mode-Locked Lasers: Properties and Applications

Sooudi

Sygletos

Ellis

et al. 2012

IEEE J. Quantum Electron.

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Abstract-In this paper, we describe generation and application of wide, narrow linewidth optical frequency combs using dualmode injection-locking of InP quantum-dash mode-locked lasers. In the first part, the dependence of the RF locking-range on the device's absorber voltage is experimentally investigated. Under optimized absorber voltage, a continuous, wide RF locking-range of ≈400 MHz is achievable for lasers with 21 GHz repetition rate. The total RF locking-range of ≈440 MHz is possible considering of locking-range for positive and negative absorber voltages. This wide tuning >2% of the repetition rate, a record for a monolithic mode-locked laser, is reported from a two-section device without any additional passive section or extended-cavity for repetition rate tuning. It is shown that the effective RF locking-range in dual-mode injection corresponds to the optical locking-range and repetition rate tuning under CW injection which is wider when the free-running mode-locking operation is "less stable". The widest comb consists of 35 narrow lines within 10 dB of the peak, spanning ≈ 0.7 THz, generating 3.7 ps pulses. In the second part, we show the first demonstration of multi pump phase-synchronization of two 10 Gb/s DPSK channels in a phasesensitive amplifier using dual-mode injection-locking technique. The phase-sensitive amplifier based on "black box" scheme shows more than 7 dB phase-sensitive gain and error free performance for both input channels with 1 dB penalty.Index Terms-Mode-locked lasers, optical-injection-locking, optical frequency combs, quantum-dash lasers, and phasesensitive amplifiers.

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confidence: 99%

Optical Frequency Comb Generation Using Dual-Mode Injection-Locking of Quantum-Dash Mode-Locked Lasers: Properties and Applications

Sooudi

Sygletos

Ellis

et al. 2012

IEEE J. Quantum Electron.

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“…The combination of PolM and polarizer provides the tuning of α, thus increasing the possibility of increasing the number of lines and enhancing the spectral flatness. Healy et al [138] proposed and demonstrated the first OFC using two PolM in cascade, configured as amplitude modulators for CoWDM systems, as shown in the Fig. 16 (b).…”

Section: A Electro-optic Optical Frequency Comb Generatorsmentioning

confidence: 99%

A Survey of Optical Carrier Generation Techniques for Terabit Capacity Elastic Optical Networks

Imran

Anandarajah

Kaszubowska-Anandarajah

et al. 2018

IEEE Commun. Surv. Tutorials

106

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Abstract-Elastic optical networks (EON) have been proposed to meet the network capacity and dynamicity challenges. Hardware and software resource optimization and re-configurability are key enablers for EONs. Recently, innovative multi-carrier transmission techniques have been extensively investigated to realize high capacity (Tb/s) flexible transceivers. In addition to standard telecommunication lasers, optical carrier generators based on optical frequency combs (OFC) have also been considered with expectations of reduced cost and inventory, improved spectral efficiency and flexibility. A wide range of OFC generation techniques have been proposed in the literature over the past few years. It is imperative to summarize the state of the art, compare and assess these diverse techniques from a practical perspective. In this survey, we identify salient features of optical multicarrier generators, review and compare these techniques both from a physical and network layer perspective. OFC demultiplexing/filtering techniques have also been reviewed. In addition to transmission performance, the impact of such sources on the network performance and real-world deployment strategies with reference to cost, power consumption, and level of flexibility have also been discussed. Field trials, integrated solutions, flexibility demonstrations are also reported. Finally, open issues and possible future directions that can lead to real network deployment are highlighted.

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“…In this case, the laser bank was composed of seven DFB lasers, separated by 385.56GHz, which were passively combined and the resultant signal amplified to 23dBm before launching to the comb generator. The comb generator has been explained elsewhere 14 , and it was composed of two cascaded Mach-Zehnder modulators (MZM) driven by a clock signal at 42.84GHz, generating seven bands of seven subcarriers, each of which was separated by 42.84GHz. A small dispersion compensating fibre (DCF) was added to equalise the relative phases of the subcarriers after the second EDFA (27dBm) prior to data encoding.…”

Section: Implementation Of Superchannelsmentioning

confidence: 99%

All-optical OFDM and distributed Raman amplification: Challenges to enable high capacities and extend reach

Gunning

Frascella

Antony

et al. 2012

2012 14th International Conference on Transparent Optical Networks (ICTON)

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We review recent advances in all-optical OFDM technologies and discuss the performance of a field trial of a 2 Tbit/s Coherent WDM over 124 km with distributed Raman amplification. The results indicate that careful optimisation of the Raman pumps is essential. We also consider how all-optical OFDM systems perform favourably against energy consumption when compared with alternative coherent detection schemes. We argue that, in an energy constrained high-capacity transmission system, direct detected all-optical OFDM with 'ideal' Raman amplification is an attractive candidate for metro area datacentre interconnects with ~100 km fibre spans, with an overall energy requirement at least three times lower than coherent detection techniques

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Multi-wavelength source using low drive-voltage amplitude modulators for optical communications

Cited by 107 publications

References 13 publications

Optical Frequency Comb Generation Using Dual-Mode Injection-Locking of Quantum-Dash Mode-Locked Lasers: Properties and Applications

Optical Frequency Comb Generation Using Dual-Mode Injection-Locking of Quantum-Dash Mode-Locked Lasers: Properties and Applications

A Survey of Optical Carrier Generation Techniques for Terabit Capacity Elastic Optical Networks

All-optical OFDM and distributed Raman amplification: Challenges to enable high capacities and extend reach

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