First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation

Peter. P. M. Jansweijer; Nayib. A. D. Boukadida; Kalle. Hanhijärvi; Anders. Wallin

doi:10.1109/ISPCS66324.2025.11281757

First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation

Peter. P. M. Jansweijer
, Nayib. A. D. Boukadida
, Kalle. Hanhijärvi
, Anders. Wallin

SU1202 Electrical metrology

Dutch Research Council

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

A time transfer link consisting of PTP High Accuracy equipment (PTP-HA, e.g., White Rabbit) can transfer time with sub-nanosecond accuracy. Originally PTP-HA equipment is calibrated as a set of two devices. Progress in calibration makes exchange of individual components, such as pluggable transceivers, possible without the need for expensive in-situ end-to-end calibrations. This is expected to be covered in a future release of the IEEE 1588 standard.To determine the latencies of a pluggable transceiver, a time delay calibrated reference photodetector is essential. Latency values are stored in the transceiver memory, which enables exchange without breaking calibration.This paper describes the results of inter-comparing several calibrated reference photodetectors that were calibrated in different calibration setups. These photodetectors were exchanged between laboratories to cross-verify their stated optical to electrical time delays. The initial cross-verification results lead to further investigation of the calibration setup. The results of this investigation will be reported.

Original language	English
Title of host publication	2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS)
Subtitle of host publication	Proceedings
Publisher	IEEE Institute of Electrical and Electronic Engineers
Number of pages	6
ISBN (Electronic)	978-1-6654-7750-5
ISBN (Print)	978-1-6654-7751-2
DOIs	https://doi.org/10.1109/ISPCS66324.2025.11281757
Publication status	Published - 10 Oct 2025
MoE publication type	A4 Article in a conference publication
Event	2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS) - Ottawa, ON, Canada Duration: 6 Oct 2025 → 10 Oct 2025

Conference

Conference	2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS)
Period	6/10/25 → 10/10/25

Keywords

Rabbits
Accuracy
Systematics
Delay effects
Laboratories
Metrology
Photodetectors
Transceivers
Calibration
Synchronization

Access to Document

10.1109/ISPCS66324.2025.11281757

WRITE: Precision time for industry
Wallin, A. (Manager) & Hanhijärvi, K. (Participant)
EURAMET e.V.
1/06/18 → 30/11/21
Project: EU project

Cite this

Jansweijer, P. P. M., Boukadida, N. A. D., Hanhijärvi, K., & Wallin, A. (2025). First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation. In 2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS): Proceedings Article 11281757 IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/ISPCS66324.2025.11281757

Jansweijer, Peter. P. M. ; Boukadida, Nayib. A. D. ; Hanhijärvi, Kalle. et al. / First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation. 2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS): Proceedings. IEEE Institute of Electrical and Electronic Engineers, 2025.

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title = "First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation",

abstract = "A time transfer link consisting of PTP High Accuracy equipment (PTP-HA, e.g., White Rabbit) can transfer time with sub-nanosecond accuracy. Originally PTP-HA equipment is calibrated as a set of two devices. Progress in calibration makes exchange of individual components, such as pluggable transceivers, possible without the need for expensive in-situ end-to-end calibrations. This is expected to be covered in a future release of the IEEE 1588 standard.To determine the latencies of a pluggable transceiver, a time delay calibrated reference photodetector is essential. Latency values are stored in the transceiver memory, which enables exchange without breaking calibration.This paper describes the results of inter-comparing several calibrated reference photodetectors that were calibrated in different calibration setups. These photodetectors were exchanged between laboratories to cross-verify their stated optical to electrical time delays. The initial cross-verification results lead to further investigation of the calibration setup. The results of this investigation will be reported.",

keywords = "Rabbits, Accuracy, Systematics, Delay effects, Laboratories, Metrology, Photodetectors, Transceivers, Calibration, Synchronization",

author = "Jansweijer, \{Peter. P. M.\} and Boukadida, \{Nayib. A. D.\} and Kalle. Hanhij{\"a}rvi and Anders. Wallin",

year = "2025",

month = oct,

day = "10",

doi = "10.1109/ISPCS66324.2025.11281757",

language = "English",

isbn = "978-1-6654-7751-2",

booktitle = "2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS)",

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note = "2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS) ; Conference date: 06-10-2025 Through 10-10-2025",

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Jansweijer, PPM, Boukadida, NAD, Hanhijärvi, K & Wallin, A 2025, First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation. in 2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS): Proceedings., 11281757, IEEE Institute of Electrical and Electronic Engineers, 2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS), 6/10/25. https://doi.org/10.1109/ISPCS66324.2025.11281757

First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation. / Jansweijer, Peter. P. M.; Boukadida, Nayib. A. D.; Hanhijärvi, Kalle. et al.
2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS): Proceedings. IEEE Institute of Electrical and Electronic Engineers, 2025. 11281757.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation

AU - Jansweijer, Peter. P. M.

AU - Boukadida, Nayib. A. D.

AU - Hanhijärvi, Kalle.

AU - Wallin, Anders.

PY - 2025/10/10

Y1 - 2025/10/10

N2 - A time transfer link consisting of PTP High Accuracy equipment (PTP-HA, e.g., White Rabbit) can transfer time with sub-nanosecond accuracy. Originally PTP-HA equipment is calibrated as a set of two devices. Progress in calibration makes exchange of individual components, such as pluggable transceivers, possible without the need for expensive in-situ end-to-end calibrations. This is expected to be covered in a future release of the IEEE 1588 standard.To determine the latencies of a pluggable transceiver, a time delay calibrated reference photodetector is essential. Latency values are stored in the transceiver memory, which enables exchange without breaking calibration.This paper describes the results of inter-comparing several calibrated reference photodetectors that were calibrated in different calibration setups. These photodetectors were exchanged between laboratories to cross-verify their stated optical to electrical time delays. The initial cross-verification results lead to further investigation of the calibration setup. The results of this investigation will be reported.

AB - A time transfer link consisting of PTP High Accuracy equipment (PTP-HA, e.g., White Rabbit) can transfer time with sub-nanosecond accuracy. Originally PTP-HA equipment is calibrated as a set of two devices. Progress in calibration makes exchange of individual components, such as pluggable transceivers, possible without the need for expensive in-situ end-to-end calibrations. This is expected to be covered in a future release of the IEEE 1588 standard.To determine the latencies of a pluggable transceiver, a time delay calibrated reference photodetector is essential. Latency values are stored in the transceiver memory, which enables exchange without breaking calibration.This paper describes the results of inter-comparing several calibrated reference photodetectors that were calibrated in different calibration setups. These photodetectors were exchanged between laboratories to cross-verify their stated optical to electrical time delays. The initial cross-verification results lead to further investigation of the calibration setup. The results of this investigation will be reported.

KW - Rabbits

KW - Accuracy

KW - Systematics

KW - Delay effects

KW - Laboratories

KW - Metrology

KW - Photodetectors

KW - Transceivers

KW - Calibration

KW - Synchronization

U2 - 10.1109/ISPCS66324.2025.11281757

DO - 10.1109/ISPCS66324.2025.11281757

M3 - Conference article in proceedings

SN - 978-1-6654-7751-2

BT - 2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS)

PB - IEEE Institute of Electrical and Electronic Engineers

T2 - 2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS)

Y2 - 6 October 2025 through 10 October 2025

ER -

Jansweijer PPM, Boukadida NAD, Hanhijärvi K , Wallin A. First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation. In 2025 IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication (ISPCS): Proceedings. IEEE Institute of Electrical and Electronic Engineers. 2025. 11281757 doi: 10.1109/ISPCS66324.2025.11281757

First inter-comparison of optical to electrical time delay calibrated photodetectors and calibration setup validation

Abstract

Conference

Keywords

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Projects

WRITE: Precision time for industry

Cite this