Whose period is known as Golden Age for Sanskrit

Gupta period was known as the golden period for the growth and development of Sanskrit literature.
The Gupta Empire, which ruled the Indian subcontinent from 320 to 550 AD, ushered in a golden age of Indian civilization. In the Age of Gupta Empire large achievements made by the Indian in the field of Science, Literature, Engineering and Arts, Mathematics, astronomy and religion and also philosophy during the Gupta.