8.32 Tbit/s Coherent Transmission Using a Quantum-Dash Mode-Locked Laser Diode

Marin, P.; Pfeifle, J.; Kemal, J. N.; Wolf, S.; Vijayan, Kovendhan; Chimot, N.; Martinez, A.; Ramdane, A.; Lelarge, F.; Freude, W.; Koos, C.

doi:10.1364/cleo_si.2016.sth1f.1

Cited by 15 publications

(13 citation statements)

References 8 publications

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“…In a third set of experiments, we use quantum-dash mode-locked laser diodes (MLLD) as frequency comb sources. These devices exhibit rather large optical linewidths, which either requires dedicated phase-noise reduction schemes [13], selfhomodyne detection [14], or digital phase tracking [15] [15]. More recently, we have shown that at sufficiently high symbol rates, MLLD can also be used as multiwavelength LO, despite their comparatively large optical linewidth [16].…”

Section: Discussionmentioning

confidence: 99%

Chip-scale frequency comb generators for high-speed communications and optical metrology

et al. 2017

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Chip-scale frequency comb sources are key elements for a variety of applications, comprising massively parallel optical communications and high-precision optical metrology. In this talk, we give an overview on our recent progress in the area of integrated optical comb generators and of the associated applications. Our experiments cover modulator-based comb sources, injection locking of gain-switched laser diodes, quantum-dash mode-locked lasers, as well as Kerr comb sources based on cavity solitons. We evaluate and compare the performance of these devices as optical sources for massively parallel wavelength division multiplexing at multi-terabit/s data rates, and we report on comb-based approaches for high-precision distance metrology.

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Section: Discussionmentioning

confidence: 99%

Chip-scale frequency comb generators for high-speed communications and optical metrology

et al. 2017

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“…In this work, we show that the phase-noise limitations of QD-MLLD-based WDM transmission schemes can be overcome by a continuous feed-forward algorithm for symbol-wise phase tracking [22], without any additional optical hardware. Expanding on our earlier demonstrations [15], our concept allows for data transmission using 16-state quadrature amplitude modulation (16QAM), even in the presence of strong phase noise of the QD-MLLD tones. The viability of our concept is demonstrated in a series of transmission experiments.…”

Section: Introductionmentioning

confidence: 93%

Comb-based WDM transmission at 10 Tbit/s using a DC-driven quantum-dash mode-locked laser diode

Marin-Palomo¹,

Kemal²,

Trocha³

et al. 2019

Opt. Express

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Chip-scale frequency comb generators have the potential to become key building blocks of compact wavelength-division multiplexing (WDM) transceivers in future metropolitan or campus-area networks. Among the various comb generator concepts, quantum-dash (QD) mode-locked laser diodes (MLLD) stand out as a particularly promising option, combining small footprint with simple operation by a DC current and offering flat broadband comb spectra. However, the data transmission performance achieved with QD-MLLD was so far limited by strong phase noise of the individual comb tones, restricting experiments to rather simple modulation formats such as quadrature phase shift keying (QPSK) or requiring hard-ware-based compensation schemes. Here we demonstrate that these limitations can be over-come by digital symbol-wise phase tracking algorithms, avoiding any hardware-based phase-noise compensation. We demonstrate 16QAM dualpolarization WDM transmission on 38 channels at an aggregate net data rate of 10.68 Tbit/s over 75 km of standard single-mode fiber. To the best of our knowledge, this corresponds to the highest data rate achieved through a DC-driven chip-scale comb generator without any hardware-based phase-noise reduction schemes.

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“…This notwithstanding, good results in the context of WDM communications can be realized with single-section passively mode-locked quantum dot InAs/InP lasers [34]. These lasers feature optical linewidth in the ∼10 MHz range, but the instantaneous linewidth is much narrower, thus enabling complex modulation formats [35]. Recent results indicate that self-injection locking with the aid of an external (free space) cavity can lead to a dramatic decrease in both optical linewidth and timing jitter [36].…”

Section: Integration Potential Of Frequency Combsmentioning

confidence: 99%

Frequency Comb-Based WDM Transmission Systems Enabling Joint Signal Processing

et al. 2018

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We review the use of optical frequency combs in wavelength-division multiplexed (WDM) fiber optic communication systems. In particular, we focus on the unique possibilities that are opened up by the stability of the comb-line spacing and the phase coherence between the lines. We give an overview of different techniques for the generation of optical frequency combs and review their use in WDM systems. We discuss the benefits of the stable line spacing of frequency combs for creating densely-packed optical superchannels with high spectral efficiency. Additionally, we discuss practical considerations when implementing frequency-comb-based transmitters. Furthermore, we describe several techniques for comb-based superchannel receivers that enables the phase coherence between the lines to be used to simplify or increase the performance of the digital carrier recovery. The first set of receiver techniques is based on comb-regeneration from optical pilot tones, enabling low-overhead self-homodyne detection. The second set of techniques takes advantage of the phase coherence by sharing phase information between the channels through joint digital signal processing (DSP) schemes. This enables a lower DSP complexity or a higher phase-noise tolerance.

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8.32 Tbit/s Coherent Transmission Using a Quantum-Dash Mode-Locked Laser Diode

Cited by 15 publications

References 8 publications

Chip-scale frequency comb generators for high-speed communications and optical metrology

Chip-scale frequency comb generators for high-speed communications and optical metrology

Comb-based WDM transmission at 10 Tbit/s using a DC-driven quantum-dash mode-locked laser diode

Frequency Comb-Based WDM Transmission Systems Enabling Joint Signal Processing

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