EXTERNAL CAVITY LASER, OPTIC TRANSMITTER AND PASSIVE OPTICAL NETWORK SYSTEM

摘要

Disclosed are an external cavity laser, an optic transmitter and a passive optical network system. The external cavity laser comprises: a gain dielectric (10), an optical modulator (20), a first optical filter (30) and a reflective device (40). The gain dielectric (10) generates an optical signal and transmits same to the first optical filter (30), the optical signal passing through the first optical filter (30) is reflected into a first optical signal and a second optical signal by the reflective device (40), and the reflective device (40) transmits the first optical signal to the gain dielectric (10) and transmits the second optical signal to the optical modulator (20).