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Proceedings Paper

InP photoreceiver OEICs for high-speed optical transmission systems
Author(s): G. G. Mekonnen; W. Schlaak; Heinz-Gunter Bach; Th. Engel; Carsten Schramm; Andreas Umbach
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Paper Abstract

Photoreceivers based on InP are becoming increasingly important for 40 Gbit/s telecommunication systems operating at the wavelength of 1.55 micrometers . Due to the monolithic integration, they are advantageous in respect of high-speed performance, small size and cost saving in high-frequency packaging. Research groups worldwide are engaged in developing such OEIC's, with varying architectures and types of the components. Our broadband photoreceiver OEIC consists of a waveguide-integrated GaInAs p-i-n photodetector and a distributed amplifier. The 5*20 micrometers sized photodetectors, with a responsivity of 0.4 A/W, reveal a 3 dB cut-off frequency of 70 GHz. The electrical distributed amplifier is made of our high-electron mobility transistors. The HEMT devices with gate lengths of 0.25 micrometers exhibit cut-off frequencies fT and fmax of up to 100 and 250 GHz, respectively. The integrated photoreceivers are characterized on-after using a heterodyne-measurement setup and finally packaged into modules for system experiments. On recently fabricated wafers, the receivers show a bandwidth of 40 GHz, whereas the amplifiers alone even exhibit values as high as 43 GHz, with gain ripple less than 1 dB.

Paper Details

Date Published: 19 April 2000
PDF: 10 pages
Proc. SPIE 3950, Optoelectronic Integrated Circuits IV, (19 April 2000); doi: 10.1117/12.382147
Show Author Affiliations
G. G. Mekonnen, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)
W. Schlaak, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)
Heinz-Gunter Bach, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)
Th. Engel, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)
Carsten Schramm, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)
Andreas Umbach, Heinrich-Hertz-Institut fuer Nachrichtentechnik Berlin GmbH (Germany)


Published in SPIE Proceedings Vol. 3950:
Optoelectronic Integrated Circuits IV
Yoon-Soo Park; Ray T. Chen, Editor(s)

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