A reconfigurable 14-bit 60GPhoton/s Single-Photon receiver for visible light communications

Author

Fisher, Edward ; Underwood, Ian ; Henderson, Robert

Author_Institution

Inst. for Integrated Micro & Nano Syst., Univ. of Edinburgh, Edinburgh, UK

fYear

2012

fDate

17-21 Sept. 2012

Firstpage

85

Lastpage

88

Abstract

A reconfigurable Single-Photon Avalanche Diode integration mode receiver in 130nm CMOS is presented for optical links with an array readout bandwidth of 100MHz. The all-digital 32×32 SPAD array achieves a minimum dead time of 5.9ns, and a median dark count rate of 2.5kHz per SPAD. Pulse shortening increases the dynamic range by preventing pulse overlap. An in-pixel feedback loop allows synchronous or self-clocked asynchronous time division multiplexing. The internal gain of SPADs and spatio-temporal summation removes the need for analogue amplification. A maximum count rate of 58GHz is observed, with SNR of 79dB, a sensitivity of -31.7dBm at 100MHz and a BER of 10^-9. The sensor core draws 89mW at maximum count rate.

Keywords

CMOS integrated circuits; amplification; avalanche diodes; error statistics; optical communication; optical links; optical receivers; time division multiple access; BER; CMOS; all-digital SPAD array; analogue amplification; bandwidth 100 MHz; frequency 2.5 kHz; frequency 58 GHz; in-pixel feedback loop; optical links; pulse overlap; pulse shortening; self-clocked asynchronous time division multiplexing; single-photon avalanche diode integration mode receiver; single-photon receiver; size 130 nm; spatio-temporal summation; synchronous asynchronous time division multiplexing; time 5.9 ns; visible light communications; Arrays; Bit error rate; Clocks; Noise; Optical sensors; Photonics; Sensitivity;

fLanguage

English

Publisher

ieee

Conference_Titel

ESSCIRC (ESSCIRC), 2012 Proceedings of the

Conference_Location

Bordeaux

ISSN

1930-8833

Print_ISBN

978-1-4673-2212-6

Electronic_ISBN

1930-8833

Type

conf

DOI

10.1109/ESSCIRC.2012.6341262

Filename

6341262