Enhanced conductivity of sol-gel silica cladding for efficient poling in electro-optic polymer/TiO2 vertical slot waveguide modulators

Yasufumi Enami; Youssef Jouane; Jingdong Luo; Alex K-Y. Jen

doi:10.1364/OE.22.030191

Enhanced conductivity of sol-gel silica cladding for efficient poling in electro-optic polymer/TiO₂ vertical slot waveguide modulators

Yasufumi Enami^*, Youssef Jouane, Jingdong Luo, Alex K-Y. Jen

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

19 Citations (Scopus)

Abstract

We report the enhanced conductivity of sol-gel silica under-cladding for efficient poling of electro-optic (EO) polymer in a hybrid EO polymer/TiO₂ vertical slot waveguide modulator. The electrical volume conductivity of sol-gel silica cladding increases approximately 30 times when the calcining time of the cladding layer is critically reduced to 45 minutes, which increases the in-device EO coefficient of the 600-nm-thick EO polymer film in modulators and reduces the lower halfwave voltage (V_π) of the modulators. The lowest driving voltage (V_π) of the TiO₂ slot waveguide modulator is 2.0 V for an electrode length (L_e) of 10 mm and wavelength of 1550 nm (V_πL_e = 2.0 V·cm) for the low-index guest-host EO polymer SEO125. The optical propagation loss is reduced to 7 dB/cm.

Original language	English
Pages (from-to)	30191-30199
Journal	Optics Express
Volume	22
Issue number	24
Online published	25 Nov 2014
DOIs	https://doi.org/10.1364/OE.22.030191
Publication status	Published - 1 Dec 2014
Externally published	Yes

Access Output

10.1364/OE.22.030191

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{f0176735262e481888ea20c03c0369ce,

title = "Enhanced conductivity of sol-gel silica cladding for efficient poling in electro-optic polymer/TiO2 vertical slot waveguide modulators",

abstract = "We report the enhanced conductivity of sol-gel silica under-cladding for efficient poling of electro-optic (EO) polymer in a hybrid EO polymer/TiO2 vertical slot waveguide modulator. The electrical volume conductivity of sol-gel silica cladding increases approximately 30 times when the calcining time of the cladding layer is critically reduced to 45 minutes, which increases the in-device EO coefficient of the 600-nm-thick EO polymer film in modulators and reduces the lower halfwave voltage (Vπ ) of the modulators. The lowest driving voltage (Vπ ) of the TiO2 slot waveguide modulator is 2.0 V for an electrode length (Le) of 10 mm and wavelength of 1550 nm (VπLe = 2.0 V·cm) for the low-index guest-host EO polymer SEO125. The optical propagation loss is reduced to 7 dB/cm.",

author = "Yasufumi Enami and Youssef Jouane and Jingdong Luo and Jen, {Alex K-Y.}",

year = "2014",

month = dec,

day = "1",

doi = "10.1364/OE.22.030191",

language = "English",

volume = "22",

pages = "30191--30199",

journal = "Optics Express",

issn = "1094-4087",

publisher = "Optica Publishing Group",

number = "24",

}

TY - JOUR

T1 - Enhanced conductivity of sol-gel silica cladding for efficient poling in electro-optic polymer/TiO2 vertical slot waveguide modulators

AU - Enami, Yasufumi

AU - Jouane, Youssef

AU - Luo, Jingdong

AU - Jen, Alex K-Y.

PY - 2014/12/1

Y1 - 2014/12/1

N2 - We report the enhanced conductivity of sol-gel silica under-cladding for efficient poling of electro-optic (EO) polymer in a hybrid EO polymer/TiO2 vertical slot waveguide modulator. The electrical volume conductivity of sol-gel silica cladding increases approximately 30 times when the calcining time of the cladding layer is critically reduced to 45 minutes, which increases the in-device EO coefficient of the 600-nm-thick EO polymer film in modulators and reduces the lower halfwave voltage (Vπ ) of the modulators. The lowest driving voltage (Vπ ) of the TiO2 slot waveguide modulator is 2.0 V for an electrode length (Le) of 10 mm and wavelength of 1550 nm (VπLe = 2.0 V·cm) for the low-index guest-host EO polymer SEO125. The optical propagation loss is reduced to 7 dB/cm.

AB - We report the enhanced conductivity of sol-gel silica under-cladding for efficient poling of electro-optic (EO) polymer in a hybrid EO polymer/TiO2 vertical slot waveguide modulator. The electrical volume conductivity of sol-gel silica cladding increases approximately 30 times when the calcining time of the cladding layer is critically reduced to 45 minutes, which increases the in-device EO coefficient of the 600-nm-thick EO polymer film in modulators and reduces the lower halfwave voltage (Vπ ) of the modulators. The lowest driving voltage (Vπ ) of the TiO2 slot waveguide modulator is 2.0 V for an electrode length (Le) of 10 mm and wavelength of 1550 nm (VπLe = 2.0 V·cm) for the low-index guest-host EO polymer SEO125. The optical propagation loss is reduced to 7 dB/cm.

UR - http://www.scopus.com/inward/record.url?scp=84914706381&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84914706381&origin=recordpage

U2 - 10.1364/OE.22.030191

DO - 10.1364/OE.22.030191

M3 - RGC 21 - Publication in refereed journal

C2 - 25606950

SN - 1094-4087

VL - 22

SP - 30191

EP - 30199

JO - Optics Express

JF - Optics Express

IS - 24

ER -