30-km Error-Free Transmission of Directly Modulated DFB Laser Array Transmitter Optical Sub-Assembly for 100-Gb Application

Kanazawa, Shigeru; Kobayashi, Wataru; Ueda, Yuta; Fujisawa, Takeshi; Takahata, Kenichi; Ohno, Takao; Yoshimatsu, Toshihide; Ishii, Hiroyuki; Sanjoh, Hiroaki

doi:10.1109/jlt.2016.2520942

Cited by 25 publications

(5 citation statements)

References 12 publications

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“…A 2 31 -1 NRZ pseudo random binary sequence (PRBS) was transmitted at 10 Gbit/s in the back-to-back (B2B) condition as well as for a baseband-over-fiber (BBoF) link of 2km over SMF [227]. In [228], the authors described an array of four DMLs with a 17 GHz electrical bandwidth, in the wavelength range between 1295 and 1310 nm, for Local Area Network WDM (LAN-WDM) applications. Data transmission tests was performed with the standard 2 31 -1 NRZ PRBS, at 25 Gbit/s per channel, analyzing the B2B condition and the impact of 30-km propagation in BBoF link from SMF [228].…”

Section: E Imwp-integrated Microwave Photonicsmentioning

confidence: 99%

“…In [228], the authors described an array of four DMLs with a 17 GHz electrical bandwidth, in the wavelength range between 1295 and 1310 nm, for Local Area Network WDM (LAN-WDM) applications. Data transmission tests was performed with the standard 2 31 -1 NRZ PRBS, at 25 Gbit/s per channel, analyzing the B2B condition and the impact of 30-km propagation in BBoF link from SMF [228]. Andriolli et al [229] implemented an integrated MWT, manufactured with eight channels with a 12 GHz electrical bandwidth between 1541.4 and 1547.0 nm, in which each laser could be tuned around 4 nm.…”

Section: E Imwp-integrated Microwave Photonicsmentioning

confidence: 99%

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Wireless and Optical Convergent Access Technologies Toward 6G

Filgueiras¹,

Lima

Cunha

et al. 2023

IEEE Access

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The sixth generation of mobile communication (6G) systems is recently rising a lot of interest, introducing new futuristic and challenging use cases that will demand much more than just communications to become a reality. Higher throughput, lower latencies, higher number of connections will push the requirement of the future mobile networks to a new level, but also sensing, positioning and imaging will play an important role in the new foreseen use cases. The integration of techniques developed for wireless communications with those conceived for optical links will be essential to provide the infrastructure for the 6G networks. In this context, this paper presents a review on wireless and optical convergent access solutions towards the 6G systems. The manuscript brings the use cases, requirements and enablers for 6G networks including a discussion about the state-of-the-art on THz and sub-THz communications, wireless and optical convergence, visible light communication, integrated and free-space optics, new antenna designs, powerover-fiber deployments and the use of machine learning in the physical layer of future networks. By reviewing the most relevant contributions available in the literature for wireless and optical communications and presenting their main contributions, this paper clearly shows that, more than a technological trend, the convergence of wireless and optical technologies is a fundamental step towards the development of the 6G network infrastructure.

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Section: E Imwp-integrated Microwave Photonicsmentioning

confidence: 99%

Section: E Imwp-integrated Microwave Photonicsmentioning

confidence: 99%

Wireless and Optical Convergent Access Technologies Toward 6G

Filgueiras¹,

Lima

Cunha

et al. 2023

IEEE Access

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“…For the DFB laser array, due to the integration of multiple DFB lasers, the yield is much lower than that of fixed wavelength lasers. On the other hand, the coupling loss makes the power and tuning range of DFB array lasers mutually restrictive [8]- [9]. Although SMFP lasers are simple in structure and easy to manufacture, their side-mode suppression ratio (SMSR) is generally low, which makes it difficult to meet the growing communication needs of WDM systems [10]- [11].…”

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confidence: 99%

Analytical Models for External Cavity Lasers Using Tunable Etalons

Jin

et al. 2022

IEEE Photonics J.

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Recently, external-cavity tunable lasers (ECTLs) have been widely used in WDM systems for their excellent characteristics, such as high side-mode suppression ratio (SMSR), low relative intensity noise (RIN) and narrow line width. In this paper, we propose an analytical model for external-cavity lasers using tunable etalons and elaborate on the selection of key parameters in the design scheme, which is rarely discussed in detail in previous researches. By numerically solving the model based on the rate equation and the transmission matrix, we analyzed the effects of different end-facet reflectivity on the SMSR, PI curves, electron and photon concentration distributions. In addition, By choosing appropriate physical parameters, we theoretically demonstrate an ECTL with a single wavelength tuning range of 1570.5-1603.6 nm (186.95-190.9 THz), and a power efficiency of 0.673 W/A, as well as an SMSR exceeds 50 dB.

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“…Generally, there are two schemes for the integration of four DML chips. One is the monolithic integration, in which four chips are fabricated on a shared wafer [6][7][8] . Although the size of the monolithically integrated DML array chip can be minimalized, it requires a sophisticated technology regarding the wavelength control, electrical isolation between chips, etc.…”

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confidence: 99%

112 Gbit/s transmitter optical subassembly based on hybrid integrated directly modulated lasers

Zhang

Liu

et al. 2018

Chin. Opt. Lett.

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Based on the hybrid integration technology, an ultra-compact and low cost transmitter optical subassembly module is proposed. Four directly modulated lasers are combined with a coarse wavelength division multiplexer operated at the O-band. The bandwidth for all channels is measured to be approximately 3 GHz. The 112 Gb∕s transmission is experimentally demonstrated for a 10 km standard single mode fiber (SSMF), in which an optical isolator is used for avoiding the back-reflected and scattered light to improve the bit error rate (BER) performance. A low BER and clear eye opening are achieved for 10 km transmission.

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30-km Error-Free Transmission of Directly Modulated DFB Laser Array Transmitter Optical Sub-Assembly for 100-Gb Application

Cited by 25 publications

References 12 publications

Wireless and Optical Convergent Access Technologies Toward 6G

Wireless and Optical Convergent Access Technologies Toward 6G

Analytical Models for External Cavity Lasers Using Tunable Etalons

112 Gbit/s transmitter optical subassembly based on hybrid integrated directly modulated lasers

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