Patent ID: 6671293
Filing Date: 2003-12-30
Classification: G02B,H01S

Abstract:
A chiral fiber laser comprising:an elongated chiral optical fiber comprising a photonic stop band with a plurality of long-lived photonic modes occurring therein, said chiral optical fiber having a central longitudinal axis, a core disposed along said longitudinal axis, said core having a pitch, a core cross-section shape, a core length, a core height, a core width, and a core refractive index, and a cladding surrounding said core having a cladding refractive index: active dopant disposed throughout at least one of said core and the cladding, wherein said core and cladding refractive indices, said core cross-section shape, said core length, said core height, said core width, and said pitch are configured to produce a particular long-lived photonic mode, from said plural long-lived photonic modes, corresponding to a desired lasing wavelength, and excitation means, applied to said elongated chiral optical fiber, for causing said chiral optical fiber to emit electromagnetic radiation, wherein said active dopant is configured to produce peak gain substantially positioned at said selected particular long-lived photonic mode, such that lasing output occurs at said desired lasing wavelength with at least one of: a maximum output power and a minimized lasing threshold.