InP-based Optical Comb-locked Tunable Transmitter

Liu, Zhixin; Farwell, S.G.; Wale, M.J.; Richardson, David J.; Slavı́k, Radan

doi:10.1364/ofc.2016.tu2k.2

Cited by 17 publications

(10 citation statements)

References 17 publications

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“…The extracted tones are modulated individually via IQ modulators for signal generation. Due to the fixed tone spacing, the guard band can be minimized [7]. The phase coherent sub-channels can also be synthesized to become a large bandwidth super channel provided the phase between different paths are locked [95].…”

Section: A Coherent Super-channel Transmittermentioning

confidence: 99%

“…The tone recovery with low comb power allows the comb to be distributed to a large number (e.g., 100s) of racks for both short and long-reach coherent communications. In [7], we OIL a telecom-grade InPbased digital supermode distributed Bragg reflector (DS-DBR) tunable laser to a 25-GHz-spaced frequency comb, showing C-band tunable tone extraction with a simultaneous linewidth reduction from 1.5 MHz to 4 kHz. Importantly, our experiment showed that the key building blocks (inc. comb [96], tunable laser, modulator) are readily achievable on the InP photonic integration platform.…”

Section: A Coherent Super-channel Transmittermentioning

confidence: 99%

See 1 more Smart Citation

Optical Injection Locking: From Principle to Applications

Liu

Slavı́k

2020

J. Lightwave Technol.

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130

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This paper reviews optical injection locking (OIL) of semiconductor lasers and its application in optical communications and signal processing. Despite complex OIL dynamics, we attempt to explain the operational principle and main features of the OIL in an intuitive way, aiming at a wide understanding of the OIL and its associated techniques in the optic and photonic communities. We review and compare different control techniques that enable robust OIL in practical systems. The applications are reviewed with a focus on new developments in the past decade, under the categories of 'High Speed Directly Modulated Lasers' and 'Optical Carrier Recovery'. Finally, we draw our vision for future research directions.

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Section: A Coherent Super-channel Transmittermentioning

confidence: 99%

Section: A Coherent Super-channel Transmittermentioning

confidence: 99%

Optical Injection Locking: From Principle to Applications

Liu

Slavı́k

2020

J. Lightwave Technol.

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130

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“…To compensate for the residual chirp induced amplitude-phase modulation, we measured the amplitude-phase response of OIL-DMLs and proposed a data set based method to compensate for the nonlinear field response for the first time. This approach can be applied to other semiconductor modulators such as InP IQ modulator [27] to compensate for residual amplitude-phase modulation, as we have demonstrated in [28].…”

Section: B Discussionmentioning

confidence: 99%

Optical Injection-Locked Directly Modulated Lasers for Dispersion Pre-Compensated Direct-Detection Transmission

Liu

Hesketh

Kelly

et al. 2018

J. Lightwave Technol.

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The growing traffic demand in interdata center and metro communications requires high-speed and low-cost transceivers that can flexibly adapt to different transmission distances of up to a few hundred km. Ultimately low-cost transceivers will use the simplest optical hardware, namely a directly modulated transmitter and direct detection receiver. Using optical injectionlocked directly modulated lasers, we propose a transmitter that can control the full field of the optical signal and achieve errorfree transmission over up to 300 km of dispersion uncompensated SMF-28. We demonstrate such a transmission system and discuss its potential for short-and medium-reach communication systems.

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“…In many applications, phase synchronization over as large a bandwidth as possible is required. An example is Slave laser linewidth narrowing using a narrow-linewidth Master laser [ 5], or extraction of a single tone of an Optical Frequency Comb (which plays the role of the Master signal [ 6]), as shown in Fig. 1b.…”

Section: Low Oil Ratiomentioning

confidence: 99%