Patent ID: 6625363
Filing Date: 2003-09-23
Classification: C03B,C03C,G02B,H01S

Abstract:
Optical apparatus, comprising:a cladding-pumped optical fiber, said fiber including a core including material having a first index of refraction and including an active material; a multimode inner cladding layer for receiving pump radiation, said inner cladding layer disposed about said core and including material having a second index of refraction that is less than said first index of refraction; a second cladding layer disposed about said inner cladding layer, said second cladding layer including material having a third index of refraction that is less than said second index of refraction; and wherein at least one of said second cladding layer or an additional layer that is disposed about said inner cladding layer includes granular matter for applying stress to the fiber for enhancing the absorption of pump radiation by said core.