Patent ID: 6310717
Filing Date: 2001-10-30
Classification: H01S

Abstract:
An optical amplifier comprising:a nonsilica fiber doped with a rare earth element;a fiber holder having a first end portion, a second end portion, and a hole extending between said first end portion and said second end portion, said nonsilica fiber being inserted and fixed in said hole;sealing means for hermetically sealing said first end portion and said second end portion of said fiber holder;optical means optically connected to said first end portion and said second end portion so that signal light to be amplified propagates in said nonsilica fiber; andmeans for pumping said nonsilica fiber so that said nonsilica fiber provides a gain band including the wavelength of said signal light,said nonsilica fiber comprising a first nonsilica fiber having a first end and a second end respectively corresponding to said first end portion and said second end portion of said fiber holder, and a second nonsilica fiber having a third end and a fourth end respectively corresponding to said first end portion and said second end portion of said fiber holder.