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Deprecated function: TYPO3\PharStreamWrapper\Manager::initialize(): Implicitly marking parameter $resolver as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 19 of /var/www/html/shankarks/includes/file.phar.inc).
Deprecated function: TYPO3\PharStreamWrapper\Manager::initialize(): Implicitly marking parameter $collection as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 19 of /var/www/html/shankarks/includes/file.phar.inc).
Deprecated function: TYPO3\PharStreamWrapper\Manager::__construct(): Implicitly marking parameter $resolver as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 19 of /var/www/html/shankarks/includes/file.phar.inc).
Deprecated function: TYPO3\PharStreamWrapper\Manager::__construct(): Implicitly marking parameter $collection as nullable is deprecated, the explicit nullable type must be used instead in include_once() (line 19 of /var/www/html/shankarks/includes/file.phar.inc).
Deprecated function: Constant PDO::MYSQL_ATTR_USE_BUFFERED_QUERY is deprecated since 8.5, use Pdo\Mysql::ATTR_USE_BUFFERED_QUERY instead in DatabaseConnection_mysql->__construct() (line 332 of /var/www/html/shankarks/includes/database/mysql/database.inc).
Deprecated function: Constant PDO::MYSQL_ATTR_MULTI_STATEMENTS is deprecated since 8.5, use Pdo\Mysql::ATTR_MULTI_STATEMENTS instead in DatabaseConnection_mysql->__construct() (line 344 of /var/www/html/shankarks/includes/database/mysql/database.inc).

Anupama Vasudevan

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PhD student

Batch :

2018

Research Area:

EO materials and devices

About:

I am currently working towards my PhD in the Photonics Research Lab, CeNSE. My research focuses in exploring new materials that can be integrated to current silicon photonics platform and developing novel on-chip photonics devices, specifically electro-optic modulators.

Research :

Electro-optic modulators (EOM) are one of the most critical components in an interconnect circuit; improving their performance is essential. The prominent EO effect found in silicon is the plasma dispersion effect. This effect is related to the density of free carriers in a semiconductor and hence the resistive and capacitive components that arise limits the bandwidth of a silicon EOM to a few tens of Gigahertz.

On the other hand, commercially available EOM use non-linear materials that show the linear electro-optic Pockels effect. Barium Titanate (BTO) is a material that has the largest Pockels coefficients. It can also be grown on large wafer-size silicon substrates and with appreciable crystal quality.

My work focuses on using integrated BTO for on-chip electro-optic modulation. We also study the material properties that such a thin film ferroelectric material shows which can potentially affect its electro-optic response, like multiple ferroelectric domain-switching and other thin-film effects like domain pinning.

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Anupama Vasudevan

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