Sterlite Optical Technologies is a leading global provider of Optical Fibers, Telecomminications Cables and Power Transmission Conductors. The company is the India's only integrated Optical Fiber manufacturer and is among the select few globally. The company is a Public Limited company, listed on the Bombay Stock Exchange and National Stock Exchange. In India, Sterlite Optical Technologies is a significant market leader. The company currently sells its telecom and power products in over 60 countries.

Sterlite Optical Technologies Ltd was formally created and deployed as a legal entity on 24 March 2000 under the name of Sterlite Telecom Systems Ltd. It was formed after the demerger of the telecom business from Sterlite Industries (India), with effect from July 1, 2000 to enable sharper strategic emphasis on each of the businesses. On 21 August 2000, the Company's name was changed from Sterlite Telecom Systems Ltd to Sterlite Optical Technologies Ltd. The company has its manufacturing facilities at Aurangabad and Pune in Maharashtra Silvassa in Dadra & Nagar Haveli, and Haridwar in Uttarakhand.

In the year 2004-05, Sterlite Telecables Ltd, a wholly owned subsidiary company merged with the another wholly owned subsidiary company called Sterlite Telelink Ltd. Also in the same year, the company has formally introduced their three new products which are especially designed for Access and Premise Network. In the year 2005-06, the company has formally introduced six new products for Access, Premise & Fibre-to-the-Home applications.

In the year 2005-2006, the company has increased the installed capacity for for Fiber Optic Cables by 1400000 FKM to 2400000 FKM. Also in the same year, they stared a new project of producing Broadband Access Network. On July 2006, the company executed a strategic acquisition of the Power Transmission Line division from Sterlite Industries (India) Ltd for a consideration of Rs.1485 million. In the same year, the company's two wholly owned subsidiaries namely Sterlite Telecom Ltd and Sterlite Telelink Ltd had merged with the Parent Company.

In the year 2006-2007 the company has increased the installed capacity for Copper Telecom Cables by 2000000 CKM to 9500000 CKM, for Fiber Optic Cables by 822528 FKM to 3222528 FKM and for Broad band Access Networks they increase the numbers by 120000 to 720000. Also the company has introduced two new products namely Sterlite DOF-LITE TM ITU-TG.655 D and E range optical products for access networks and Sterlite ADSL 2+ wireless and wireline modems for broadband applications.

Deloitte has nominated Sterlite Optical Technologies as the ?6th Fastest Growing Technologies Company in India? and ?73rd Fastest Growing Technology Company in Asia-Pacific? in 2006. The company was also among the winners of Deloitte Technology Fast 50 India & Fast 500 Asia Pacific awards for 2005.

In the year 2007, the company executed a strategic acquisition of 58.70% holding in Sterlite Infrastructure Private Ltd and thus it becomes a subsidiary of the Sterlite Optical Technologies Ltd. On July 2007, the company got its present name, Sterlite Technologies Ltd. The company has decided to expand the manufacturing capacity of optical fiber at Aurangabad in Maharashtra to 12 million Km from 6 million Km.