Title :
S-band amplifier with variable gain tilt control
Author :
Clarke, I.G. ; Meleshkevich, M. ; Martin, M. ; Poirier, J.
Author_Institution :
IPG Photonics, Sturbridge, MA, USA
Abstract :
We present a method of variable gain tilt control for a thulium doped fiber amplifier (TDFA) using a mid-stage attenuator, together with measurements of the amplifier performance. The addition of tilt control allows S-band amplifiers to be used with a wide array of fibers and channel configurations since the effect of both Raman interactions and the O-H absorption peak can be compensated at installation. This is particularly important when adding amplifiers to an existing system, which may not be fully characterized in the S and S+ bands. The simplicity of using a variable attenuator to produce gain tilt, combined with the very short active-fiber lengths, allows manufacture at similar costs to erbium amplifiers.
Keywords :
Raman lasers; optical communication equipment; optical fibre amplifiers; thulium; O-H absorption peak; Raman interactions; S-band amplifiers; amplifier performance; channel configurations; gain tilt; mid-stage attenuator; thulium doped fiber amplifier; tilt control; variable attenuator; variable gain tilt control; very short active-fiber lengths; Absorption; Attenuation measurement; Attenuators; Costs; Doped fiber amplifiers; Erbium; Gain measurement; Manufacturing; Performance gain; Stimulated emission;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2001. OFC 2001
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-655-9
