Generation of Coherent Multicarrier Signals by Gain Switching of Discrete Mode Lasers

Anandarajah, Prince M.; Maher, Robert; Xu, Yuanye; Latkowski, Sylwester; O’Carroll, John; Murdoch, Stuart G.; Phelan, Richard; O’Gorman, J.; Barry, Liam P.

doi:10.1109/jphot.2011.2105861

Cited by 156 publications

(109 citation statements)

References 22 publications

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“…If we compare VCSEL based OFCG with sources based on other laser diode technology [10], [11], we find that with equivalent set-ups, VCSELs offer wider combs with better energy efficiency.…”

Section: Discussionmentioning

confidence: 99%

“…The diode laser technology plays a major role. The use of edge emitting technologies such as Fabry-Perot [10], Distributed Feedback Bragg lasers or Discrete Mode [11] has been recently reported. In this sense, our previous work [7] shows that the use of high performance Vertical Cavity Surface Emitting Lasers (VCSEL) permits the generation of an enhanced comb, record in energy efficiency and optical span.…”

Section: T He Interest Optical Frequency Comb Generators (Ofcg)mentioning

confidence: 99%

“…For optical communications, the flatness of the comb is more critical and the useful modes lie within a 3dB or 10dB bandwidth [11]. This is why we have evaluated the comb span using several metrics.…”

Section: A Optical Frequency Span and Flatnessmentioning

confidence: 99%

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Experimental Study of VCSEL-Based Optical Frequency Comb Generators

Cano

Dios

Serrano

et al. 2014

IEEE Photon. Technol. Lett.

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Abstract-In this letter, we explore the performance of an optical frequency comb generator (OFCG) sources based on vertical-cavity surface-emitting laser diodes. The direct gain switching (GS) technique, the indirect electro-optical (EO) technique, and a combination of both have been experimentally evaluated. We have observed that this later combination gives birth to an enhanced OFCG that offers a tunable improved comb in terms of frequency span, flatness, and coherence with respect to the sole EO approach, as it partly inherits the high-efficiency qualities of the GS-OFCG while offering a wider span.

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“…If we compare VCSEL based OFCG with sources based on other laser diode technology [10], [11], we find that with equivalent set-ups, VCSELs offer wider combs with better energy efficiency.…”

Section: Discussionmentioning

confidence: 99%

Section: T He Interest Optical Frequency Comb Generators (Ofcg)mentioning

confidence: 99%

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Experimental Study of VCSEL-Based Optical Frequency Comb Generators

Cano

Dios

Serrano

et al. 2014

IEEE Photon. Technol. Lett.

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“…1 is used to achieve transmission of five 5G bands of UF-OFDM on a mmWave signal over 25 km of fibre and a Vivaldi Antenna wireless link utilising a gain switched DFB laser with external injection [11] [4]. The DFB slave laser is gain switched using a 16.5 GHz sinusoidal RF signal with an amplified RF power of 15 dBm.…”

Section: Methodsmentioning

confidence: 99%

“…In this paper, a 28 GHz 5G RoF system based on an OFC generated by an externally injected gain switched distributed feedback (DFB) laser is proposed [11]. This technique offers a flexible FSR as well as tunable wavelength and excellent signal to noise ratio (SNR).…”

Section: Optical Heterodyne For Mmwave Rofmentioning

confidence: 99%

60 GHz 5G Radio-Over-Fiber Using UF-OFDM With Optical Heterodyning

Browning

Martin

Farhang

et al. 2017

IEEE Photon. Technol. Lett.

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Abstract-A 5G millimeter-wave radio over fibre optical fronthaul system based on optical heterodyning, utilising an externally injected gain switched distributed feedback laser, is successfully demonstrated. Five bands of UF-OFDM are transmitted over 25 km of fibre and a 28 GHz Vivaldi Antenna wireless link. Transmission performance below the 7% FEC limit is achieved with an aggregate total data rate of 4.56 Gb/s.

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Photonically integrated gain‐switched lasers for optical frequency comb generation

Hammad

Lakshmijayasimha

Kaszubowska-Anandarajah

et al. 2021

Micro & Optical Tech Letters

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The authors present the complete characterization of two cost-efficient photonically integrated slotted lasers that offer regrowth free manufacturing. Furthermore, the application of these devices, as multi-carrier transmitters is also investigated. In particular, the authors employ gain switching, an optical frequency comb (OFC) generation technique based on the direct modulation. The first device used is a dual section discrete mode index patterned device. It comprises two sections, implemented in a master-slave configuration to achieve optical injection locking (OIL) of the slave section. The second, a foursection device, consists of two regrowth-free Fabry-Perot lasers, also forming a master-slave configuration. The authors demonstrate that the additional sections give finer control over the OIL parameters of the device. Results show that the OIL leads to the enhancement of the modulation bandwidth, which in turn can be used to generate a broader OFC. The generated OFC is characterized to demonstrate additional improvements brought

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Generation of Coherent Multicarrier Signals by Gain Switching of Discrete Mode Lasers

Cited by 156 publications

References 22 publications

Experimental Study of VCSEL-Based Optical Frequency Comb Generators

Experimental Study of VCSEL-Based Optical Frequency Comb Generators

60 GHz 5G Radio-Over-Fiber Using UF-OFDM With Optical Heterodyning

Photonically integrated gain‐switched lasers for optical frequency comb generation

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