Frequency control characteristics of a single-frequency fiber laserwith an external light injection

摘要

Characteristics of a single-frequency erbium-doped fiber lasern(EDFL) controlled by an external light source is investigated. Thenfrequency control is achieved by cooperatively induced spatialnhole-burning (SHB) formed by the interference between the lasing lightnand the external light. We evaluate the frequency stability of severalncavity designs of the fiber laser and the frequency controlncharacteristics in detail. Tunable operation as wide as 30 nm wavelengthnrange with a good frequency stability is also demonstrated