A 56-Gb/s PAM4 InP HBT Driver IC Compensating for Nonlinearity of Extinction Curve of EAM

Toshiki Kishi, Munehiko Nagatani, Shigeru Kanazawa, Wataru Kobayashi, Hiroshi Yamazaki, Minoru Ida, Kenji Kurishima, Masafumi Nogawa, Shunji Kimura, Hideyuki Nosaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

We devised a PAM4 driver IC that can compensate for the nonlinearity of the extinction curve of an electroabsorption modulator (EAM). The driver was designed and fabricated by using our InP HBT technology (ft = 290 GHz, fmax = 320 GHz). The driver can adjust the modulation voltage swing for each intensity level to obtain clear eye openings in the optical domain. The results showed clear eye openings of the optical output waveform when compensating for the nonlinearity. To evaluate the effect of compensating for the nonlinearity quantitatively, the bit error rate (BER) was measured. A minimum receiver sensitivity of -9 dBm was observed when compensating at a BER of 2 × 10-4, while a minimum receiver sensitivity was not observed at the BER without compensating. Our PAM4 driver can provide clear 56-Gb/s optical eye openings compensating for the nonlinearity of the extinction curve of an EAM.

Original languageEnglish
Title of host publication2015 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479984947
DOIs
Publication statusPublished - Oct 30 2015
Externally publishedYes
Event37th IEEE International Symposium on Workload Characterization, IISWC 2015 - New Orleans, United States
Duration: Oct 11 2015Oct 14 2015

Publication series

Name2015 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2015

Other

Other37th IEEE International Symposium on Workload Characterization, IISWC 2015
CountryUnited States
CityNew Orleans
Period10/11/1510/14/15

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Electronic, Optical and Magnetic Materials

Cite this

Kishi, T., Nagatani, M., Kanazawa, S., Kobayashi, W., Yamazaki, H., Ida, M., ... Nosaka, H. (2015). A 56-Gb/s PAM4 InP HBT Driver IC Compensating for Nonlinearity of Extinction Curve of EAM. In 2015 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2015 [7314470] (2015 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CSICS.2015.7314470