摘要:
An optical waveguide having a workign mode with a tailored dispersion profile, the waveguide indlucing: (i) a dielectric confinement region surrounding a waveguide axis, the confinement region comprising a photonic crystal having at least one photomic bandgap, wherein during operation the confinement region guides EM radiation in a first range of frequencies to propagate along the waveguide axis; (ii) a dielectric core region extending along the waveguide awis and surrounded by the confinement region about the waveguide axis, wherein the core supports at least one guided mode in the first frequency range; and (iii) a dielectric dispersion tailoring region surrounded bz the confinement region about the waveguide axis, wherein the dispersion tailoring region introduces one or more additional modes in the first range of frequencies that interact with the guided mode to produce the working mode.
摘要:
High index-contrast fiber waveguides, materials for forming high index-contrast fiber waveguides, and applications of high index-contrast fiber waveguides are disclosed.
摘要:
A method for converting electromagnetic (EM) energy between guided modes of a photonic crystal waveguide (800) having a waveguide axis (810), the method including: (i) providing the photonic crystal waveguide (800) with a mode coupling segment (820) comprising at least one bend (830) in the waveguide axis (810), wherein during operation the mode coupling segment (820) converts EM energy in a first guided mode to a second guided mode; (ii) providing EM energy in the first guided mode of the photonic crystal waveguide (800); and (iii) allowing the EM energy in the first guided mode to encounter the mode coupling segment to convert at least some of the EM energy in the first guided mode to EM energy in the second guided mode.
摘要:
An optical waveguide (100) including: a dielectric core region (110) extending along a waveguide axis; and a dielectric confinement region (120) surrounding the core (110) about the waveguide axis, the confinement region (120) comprising a photonic crystal structure (122, 124) having a photonic band gap, wherein during operation the confinement region (120) guides EM radiation in at least a first range of frequencies to propagate along the waveguide axis, wherein the core (110) has an average refractive index smaller than about 1.3 for a frequency in the first range of frequencies, and wherein the core (110) has a diameter in a range between about 4μ and 80μ, wherein μ is a wavelength corresponding to a central frequency in the first frequency range.