Feasibility of an integrated optical isolator on glass
type: Dataset
description: Optical isolators are essential nonreciprocal devices used in optical communication systems. Currently, these components are commercially available but only in bulk form, due to the difficulties to embed magneto-optical materials with integrated classical technologies. To overcome this problem, our group has developed a new approach based on composite magneto-optical matrix that is fully compatible with ion-exchanged glass waveguide technology. This material is developed by organic inorganic sol-gel process and doped by magnetic nanoparticles (CoFe2O4). Such a magneto-optical composite matrix has shown promising potentialities illustrated by a specific Faraday rotation of 420°/cm (@1550nm). Using dip-coating technique, a composite layer was coated on a glass substrate containing straight channel waveguide made by a silver/sodium ion exchange. The extremities of the guides were previously buried using selective buried method in order to facilitate coupling-decoupling of light in hybrid structure. Last, a soft annealing (<100°C) and UV treatment, both compatible with the ion-exchanged process, have been implemented to finalize the magneto-optical film. Optical characterization demonstrated a good distribution of light between the magneto-optical thin film and the ion-exchanged waveguide (good lateral confinement). Furthermore TE to TM mode conversion has been observed when a longitudinal magnetic field is applied to the device. The amount of this conversion is in good agreement with the distribution of light between the layer and the guide obtained by numerical calculations, and the modal birefringence of the structure. So, the aim of my thesis is achieved and the results demonstrate the feasibility of TE to TM mode converter fully compatible with glass integrated optics
identifier: NNT: 2012STET4009
issued: 2026-05-06T03:42:10.721251
language: fr
modified: 2026-05-06T03:42:10.721256
contact point: Organization
  fn: CCSD
keyword: birefringence
keyword: conversion-de-mode-te-tm
keyword: effet-non-reciproque
keyword: guides-faits-par-echange-dions-sur-verre
keyword: infoeu-reposemanticsdoctoralthesis
keyword: integrated-optics
keyword: ion-exchanged-waveguide
keyword: isolateurs-optiques
keyword: magnetic-nanoparticles
keyword: nanoparticules-magnetiques
keyword: non-reciprocal-effect
keyword: optical-isolators
keyword: optique-integree
keyword: physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother
keyword: sol-gel
keyword: te-to-tm-mode-conversion
keyword: theses
landing page: https://theses.hal.science/tel-00955372

Feasibility of an integrated optical isolator on glass
type: Distribution
format: HTML
issued: 2026-05-06T03:42:10.725558
modified: 2026-05-06T03:42:10.687374
access URL: https://theses.hal.science/tel-00955372

test_moissonnage_selune
type: Agent