High Density Multi-Channel Passively Aligned Optical Probe for Testing of Photonic Integrated Circuits

In this work we report the results of high density multi-channel optical multiprobes with pitches of 25&#x00A0;<inline-formula><tex-math notation="LaTeX">${\mu }\rm{m}$</tex-math></inline-formula> and 50&#x00A0;<inline-formula><tex-math notation=&qu...

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Main Authors: Xaveer Leijtens, Rui Santos, Kevin Williams
Format: Article
Language:English
Published: IEEE 2021-01-01
Series:IEEE Photonics Journal
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9296295/
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author Xaveer Leijtens
Rui Santos
Kevin Williams
author_facet Xaveer Leijtens
Rui Santos
Kevin Williams
author_sort Xaveer Leijtens
collection DOAJ
description In this work we report the results of high density multi-channel optical multiprobes with pitches of 25&#x00A0;<inline-formula><tex-math notation="LaTeX">${\mu }\rm{m}$</tex-math></inline-formula> and 50&#x00A0;<inline-formula><tex-math notation="LaTeX">${\mu }\rm{m}$</tex-math></inline-formula> that provide edge-coupling used for on-wafer parallel testing of photonic integrated circuits. The probes are fabricated in an oxynitride platform and test demonstrations were carried out of edge-coupled indium-phosphide based photonic integrated circuits (PICs). Thirty-two optical parallel connections are simultaneously, passively aligned between the probe and the PIC by means of integrated guiding channels. The initial placement tolerance is more than 4&#x00A0;<inline-formula><tex-math notation="LaTeX">${\mu }\rm{m}$</tex-math></inline-formula> to give a passive alignment with an optical power variation of less than 1&#x00A0;dB. Multi-port loop-back optical power measurements are reported and the wavelength-dependent net modal gain of integrated semiconductor optical amplifiers was measured to further validate the concept.
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spelling doaj-art-1df8147798e94dcb8ff687cdbe41f4fe2025-08-20T02:38:10ZengIEEEIEEE Photonics Journal1943-06552021-01-0113111510.1109/JPHOT.2020.30453469296295High Density Multi-Channel Passively Aligned Optical Probe for Testing of Photonic Integrated CircuitsXaveer Leijtens0https://orcid.org/0000-0001-7794-8236Rui Santos1Kevin Williams2Institute for Photonic Integration, Eindhoven University of Technology, Eindhoven, MB, NetherlandsPhotonIP BV, Eindhoven, BC, NetherlandsInstitute for Photonic Integration, Eindhoven University of Technology, Eindhoven, MB, NetherlandsIn this work we report the results of high density multi-channel optical multiprobes with pitches of 25&#x00A0;<inline-formula><tex-math notation="LaTeX">${\mu }\rm{m}$</tex-math></inline-formula> and 50&#x00A0;<inline-formula><tex-math notation="LaTeX">${\mu }\rm{m}$</tex-math></inline-formula> that provide edge-coupling used for on-wafer parallel testing of photonic integrated circuits. The probes are fabricated in an oxynitride platform and test demonstrations were carried out of edge-coupled indium-phosphide based photonic integrated circuits (PICs). Thirty-two optical parallel connections are simultaneously, passively aligned between the probe and the PIC by means of integrated guiding channels. The initial placement tolerance is more than 4&#x00A0;<inline-formula><tex-math notation="LaTeX">${\mu }\rm{m}$</tex-math></inline-formula> to give a passive alignment with an optical power variation of less than 1&#x00A0;dB. Multi-port loop-back optical power measurements are reported and the wavelength-dependent net modal gain of integrated semiconductor optical amplifiers was measured to further validate the concept.https://ieeexplore.ieee.org/document/9296295/Photonic integrated circuitsoptical probingfiber-chip coupling
spellingShingle Xaveer Leijtens
Rui Santos
Kevin Williams
High Density Multi-Channel Passively Aligned Optical Probe for Testing of Photonic Integrated Circuits
IEEE Photonics Journal
Photonic integrated circuits
optical probing
fiber-chip coupling
title High Density Multi-Channel Passively Aligned Optical Probe for Testing of Photonic Integrated Circuits
title_full High Density Multi-Channel Passively Aligned Optical Probe for Testing of Photonic Integrated Circuits
title_fullStr High Density Multi-Channel Passively Aligned Optical Probe for Testing of Photonic Integrated Circuits
title_full_unstemmed High Density Multi-Channel Passively Aligned Optical Probe for Testing of Photonic Integrated Circuits
title_short High Density Multi-Channel Passively Aligned Optical Probe for Testing of Photonic Integrated Circuits
title_sort high density multi channel passively aligned optical probe for testing of photonic integrated circuits
topic Photonic integrated circuits
optical probing
fiber-chip coupling
url https://ieeexplore.ieee.org/document/9296295/
work_keys_str_mv AT xaveerleijtens highdensitymultichannelpassivelyalignedopticalprobefortestingofphotonicintegratedcircuits
AT ruisantos highdensitymultichannelpassivelyalignedopticalprobefortestingofphotonicintegratedcircuits
AT kevinwilliams highdensitymultichannelpassivelyalignedopticalprobefortestingofphotonicintegratedcircuits