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Development of a ring cavity-based fibre optic sensor for MR-compatible medical sensing applications.

Bhavsar, K.; Viswambaran, V.; Johny, J.; Kailasnath, M.; Melzer, A.; Prabhu, R.


K. Bhavsar

V. Viswambaran

J. Johny

M. Kailasnath

A. Melzer


Advances in robotic systems and rapid developments in minimally invasive surgery (MIS) have made their use possible in the operating room due to many distinct advantages offered by MIS over conventional surgical procedures. The constant increase of medical examinations, surgeries and surgical interventions using intraoperative guidance with magnetic resonance imaging (MRI) has promoted research on new sensors to be applied in this scenario. However, due to the challenging environment under MRI system limits the applicability of materials and traditional electronic sensors. Optical fibres are small in size, chemically inert, immune to electromagnetic interference and offer the real-time in vivo multi-parameter measurement capability. Herein, we report a ring cavity-based fibre optic sensor design using MR-compatible polymer material. Optical fibres were used to excite surface resonance modes (SRM) of the ring cavity-based sensor. The paper reports initial investigations on ring cavity based MR-compatible fibre optic sensor design. Computational simulations were carried out to study the effect of structural and material parameters on the sensor design. Ring cavity was developed using polymethyl methacrylate. Developed ring cavity will be used to develop the MR-compatible fibre optic sensor for medical applications.


BHAVSAR, K., VISWAMBARAN, V., JOHNY, J., KAILASNATH, M., MELZER, A. and PRABHU, R. 2019. Development of a ring cavity-based fibre optic sensor for MR-compatible medical sensing applications. IOP conference series: materials science and engineering [online], 499: proceedings of the 4th International conference on structural nano composites (NANOSTRUC 2018), 23-24 May 2018, Berlin, Germany, article number 012013. Available from:

Journal Article Type Conference Paper
Conference Name 4th International conference on structural nanocomposites (NANOSTRUC 2018)
Conference Location Berlin, Germany
Acceptance Date Feb 6, 2018
Online Publication Date Apr 3, 2019
Publication Date Apr 3, 2019
Deposit Date May 9, 2019
Publicly Available Date May 10, 2019
Journal IOP Conference Series: Materials Science and Engineering
Print ISSN 1757-8981
Electronic ISSN 1757-899X
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 499
Article Number 012013
Keywords Robotic systems; Minimally invasive surgery; MRI; Optical fibres; MR-compatible fibre optic sensor
Public URL


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