Effect of Radiation on a Mach–Zehnder Interferometer Silicon Modulator for HL-LHC Data Transmission Applications

Author

Seif El Nasr-Storey, Sarah ; Boeuf, Frederic ; Baudot, Charles ; Detraz, Stephane ; Fedeli, Jean Marc ; Marris-Morini, Delphine ; Olantera, Lauri ; Pezzullo, Giuseppe ; Sigaud, Christophe ; Soos, Csaba ; Troska, Jan ; Vasey, Francois ; Vivien, Laurent ; Z

Author_Institution

Eur. Organ. for Nucl. Res. (CERN), Geneva, Switzerland

Volume

62

Issue

1

fYear

2015

fDate

Feb. 2015

Firstpage

329

Lastpage

335

Abstract

High-speed Mach-Zehnder interferometer silicon modulators were irradiated with neutrons and X-rays in two separate radiation tests. The devices were exposed to a total fluence of 1.2 ×10¹⁵ neutrons/cm² and a total ionizing dose of 1.3 MGy; levels comparable to the worst radiation levels for a tracking detector after 10 years of operation at the High-Luminosity LHC. Our measurements indicate that the devices´ performance does not significantly degrade after exposure to nonionizing radiation and begins to be affected by ionizing radiation after a dose of a few hundred kGy; the phase-shift for an applied reverse bias of 1 V is 10% of its preirradiated value after 600 kGy of received ionizing dose.

Keywords

Mach-Zehnder interferometers; data communication; dosimetry; optical modulation; position sensitive particle detectors; radiation effects; silicon; silicon radiation detectors; HL-LHC data transmission applications; high-luminosity LHC; high-speed Mach-Zehnder interferometer silicon modulators; phase-shift; radiation effect; radiation levels; radiation tests; total ionizing dose; tracking detector; Detectors; Leakage currents; Modulation; Neutrons; Radiation effects; Silicon; X-rays; High-luminosity LHC (HL-LHC); optoelectronics; radiation damage; silicon photonics; total ionizing dose (TID);

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2015.2388546

Filename

7027245