128 Gbit/s Operation of AXEL with Energy Efficiency of 1.5 pJ/bit for Optical Interconnection

Wataru KOBAYASHI; Shigeru KANAZAWA; Takahiko SHINDO; Manabu MITSUHARA; Fumito NAKAJIMA

doi:10.1587/transele.2022OCI0002

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128 Gbit/s Operation of AXEL with Energy Efficiency of 1.5 pJ/bit for Optical Interconnection

Wataru KOBAYASHI, Shigeru KANAZAWA, Takahiko SHINDO, Manabu MITSUHARA, Fumito NAKAJIMA

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Summary :

We evaluated the energy efficiency per 1-bit transmission of an optical light source on InP substrate to achieve optical interconnection. A semiconductor optical amplifier (SOA) assisted extended reach EADFB laser (AXEL) was utilized as the optical light source to enhance the energy efficiency compared to the conventional electro-absorption modulator integrated with a DFB laser (EML). The AXEL has frequency bandwidth extendibility for operation of over 100Gbit/s, which is difficult when using a vertical cavity surface emitting laser (VCSEL) without an equalizer. By designing the AXEL for low power consumption, we were able to achieve 64-Gbit/s, 1.0pJ/bit and 128-Gbit/s, 1.5pJ/bit operation at 50°C with the transmitter dispersion and eye closure quaternary of 1.1dB.

Publication: IEICE TRANSACTIONS on Electronics Vol.E106-C No.11 pp.732-738

Publication Date: 2023/11/01

Publicized: 2023/06/05

Online ISSN: 1745-1353

DOI: 10.1587/transele.2022OCI0002

Type of Manuscript: Special Section INVITED PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)

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Authors

Wataru KOBAYASHI
  NTT Corporation
Shigeru KANAZAWA
  NTT Corporation
Takahiko SHINDO
  NTT Corporation
Manabu MITSUHARA
  NTT Corporation
Fumito NAKAJIMA
  NTT Corporation

Keyword

electro-absorption modulator, semiconductor optical amplifier, DFB laser, pulse amplitude modulation

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Wataru KOBAYASHI, Shigeru KANAZAWA, Takahiko SHINDO, Manabu MITSUHARA, Fumito NAKAJIMA, "128 Gbit/s Operation of AXEL with Energy Efficiency of 1.5 pJ/bit for Optical Interconnection" in IEICE TRANSACTIONS on Electronics, vol. E106-C, no. 11, pp. 732-738, November 2023, doi: 10.1587/transele.2022OCI0002.
Abstract: We evaluated the energy efficiency per 1-bit transmission of an optical light source on InP substrate to achieve optical interconnection. A semiconductor optical amplifier (SOA) assisted extended reach EADFB laser (AXEL) was utilized as the optical light source to enhance the energy efficiency compared to the conventional electro-absorption modulator integrated with a DFB laser (EML). The AXEL has frequency bandwidth extendibility for operation of over 100Gbit/s, which is difficult when using a vertical cavity surface emitting laser (VCSEL) without an equalizer. By designing the AXEL for low power consumption, we were able to achieve 64-Gbit/s, 1.0pJ/bit and 128-Gbit/s, 1.5pJ/bit operation at 50°C with the transmitter dispersion and eye closure quaternary of 1.1dB.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2022OCI0002/_p

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@ARTICLE{e106-c_11_732,
author={Wataru KOBAYASHI, Shigeru KANAZAWA, Takahiko SHINDO, Manabu MITSUHARA, Fumito NAKAJIMA, },
journal={IEICE TRANSACTIONS on Electronics},
title={128 Gbit/s Operation of AXEL with Energy Efficiency of 1.5 pJ/bit for Optical Interconnection},
year={2023},
volume={E106-C},
number={11},
pages={732-738},
abstract={We evaluated the energy efficiency per 1-bit transmission of an optical light source on InP substrate to achieve optical interconnection. A semiconductor optical amplifier (SOA) assisted extended reach EADFB laser (AXEL) was utilized as the optical light source to enhance the energy efficiency compared to the conventional electro-absorption modulator integrated with a DFB laser (EML). The AXEL has frequency bandwidth extendibility for operation of over 100Gbit/s, which is difficult when using a vertical cavity surface emitting laser (VCSEL) without an equalizer. By designing the AXEL for low power consumption, we were able to achieve 64-Gbit/s, 1.0pJ/bit and 128-Gbit/s, 1.5pJ/bit operation at 50°C with the transmitter dispersion and eye closure quaternary of 1.1dB.},
keywords={},
doi={10.1587/transele.2022OCI0002},
ISSN={1745-1353},
month={November},}

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TY - JOUR
TI - 128 Gbit/s Operation of AXEL with Energy Efficiency of 1.5 pJ/bit for Optical Interconnection
T2 - IEICE TRANSACTIONS on Electronics
SP - 732
EP - 738
AU - Wataru KOBAYASHI
AU - Shigeru KANAZAWA
AU - Takahiko SHINDO
AU - Manabu MITSUHARA
AU - Fumito NAKAJIMA
PY - 2023
DO - 10.1587/transele.2022OCI0002
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E106-C
IS - 11
JA - IEICE TRANSACTIONS on Electronics
Y1 - November 2023
AB - We evaluated the energy efficiency per 1-bit transmission of an optical light source on InP substrate to achieve optical interconnection. A semiconductor optical amplifier (SOA) assisted extended reach EADFB laser (AXEL) was utilized as the optical light source to enhance the energy efficiency compared to the conventional electro-absorption modulator integrated with a DFB laser (EML). The AXEL has frequency bandwidth extendibility for operation of over 100Gbit/s, which is difficult when using a vertical cavity surface emitting laser (VCSEL) without an equalizer. By designing the AXEL for low power consumption, we were able to achieve 64-Gbit/s, 1.0pJ/bit and 128-Gbit/s, 1.5pJ/bit operation at 50°C with the transmitter dispersion and eye closure quaternary of 1.1dB.
ER -