A 1991 batch IAS officer, Sahu is currently working in her cadre state Tamil Nadu.
The Appointments Committee of the Cabinet approved the proposal for appointment of Sahu as Director General, Doordarshan, an order issued by department of Personnel and Training said.
She has been appointed to the post on deputation basis for a period of three years from the date of assumption of charge, it said.
Sahu has earlier worked as Director and Joint Secretary in Information and Broadcasting Ministry, nodal authority for the national broadcaster Doordarshan.
The top post in Doordarshan fell vacant in July 2014 after the then DG, Tripurari Sharan, completed his tenure.