| 摘要 |
<p>A fiber light source (3) having, for instance, a 980 nm pump laser (28) for pumping an erbium-doped optical fiber (15) via a 980/1550 nm WDM coupler (27). The pumped fiber emits 1550 nm light. A portion of the 1550 nm light goes to a filter (33) via the WDM coupler (27). The filter (33) shapes the spectrum of the 1550 nm light. The filter (33) is a passive device that may be made from erbium-doped fiber. From the filter (33) the 1550 nm light goes through an isolator (21) or a circulator on to an optical device for which the light is specially made. Such device may be a fiber optic gyroscope. By adding a narrowband optical fiber grating at the output of the pump laser to tune its output, the fiber light source is further improved in stability under variations of ambient temperature and light source drive current.</p> |
