| 摘要 |
A doped fibre amplifier comprising: at least one light source 402 for emitting pump light having an unlocked wavelength spectrum. At least one doped fibre is optically coupled to the light source and configured to receive an optical signal and the pump light. At least one wavelength locking reflector 410 for example a Bragg grating is configured to wavelength lock the pump light and positioned such that at least a portion of the doped fibre lies between the at least one light source and the at least one wavelength locking reflector 410. The at least one light source may comprise a co-pumping light source for emitting coal-pump light and a counter pumping light source. |
