摘要:
A light-emitting device is provided which includes a gain medium having an optically-active phosphosilicate glass, wherein the phosphosilicate glass includes at least one active ion dopant and from about 1 to 30 mol% of phosphorus oxide. The phosphorous oxide may be present in an effective amount for reducing any photodarkening effect and increasing the saturation energy of the system. The active ion dopant may be a rare earth dopant. The light-emitting device may include an optical waveguide, the optical waveguide including the gain medium. The optical waveguide may have a core and at least one cladding, and the gain medium having the phosphosilicate glass may be found in the core and/or in one of the cladding.
摘要:
There is provided a pump combiner that includes: a multi-clad waveguide having a core for guiding a light signal propagating therein, a cladding surrounding the core, and an intermediate region disposed between the core and the cladding, where the intermediate region traps light leaks escaping the core and prevents the light leaks from entering the cladding; and an optical arrangement configured to inject pump light from a pump source into the cladding of the multi-clad waveguide. The optical arrangement may include at least one pump waveguide for injecting pump light from a pump source into the cladding.
摘要:
The polarization maintaining optical fiber, or preform therefore, can be of the panda type with a pedestal based on a multi-component silica glass doped with a thermal-expansion- coefficient-reducing dopant which can counteracts the thermal-expansion-coefficient- increasing side-effect of the refractive index-increasing dopant, such that when the preform is drilled to make the stress member channel in a heterogeneous region having both a pedestal portion and a cladding portion, the thermal expansion coefficients are sufficiently close to manage damage which could otherwise be caused by uneven thermal expansion caused by drilling heat.
摘要:
There is provided a two-stage brightness converter. A first brightness conversion stage has a laser cavity having a first optical waveguide doped with an active ion defining a first optical band with optical absorption, a second optical band with optical absorption and optical gain, and a third optical band with optical gain. The first laser cavity is pumped with a pump power having a wavelength in the first optical band to generate an intermediate optical signal in the second optical band. A second brightness conversion stage which is in cascade with the first brightness conversion stage comprises a second optical waveguide doped with the same active ion. The second brightness conversion stage is pumped with the intermediate optical signal to obtain a high brightness optical signal in the third optical band.
摘要:
A package for dissipating heat power and/or optical power from an optical fiber component of a device is provided. The package includes a heat sink packaging receptacle for accommodating the optical fiber component having a cavity for receiving a temperature sensitive portion of the optical fiber component. According to one aspect, the package may include a power-dissipative material for dissipating heat power or optical power, the power-dissipative material extending within the cavity and surrounding the temperature-sensitive portion of the optical fiber component. According to another aspect, the package may include at least one channel extending between the cavity and an end of the heat sink packaging receptacle, the channel being in intimate contact with the cladding of the optical fiber component for dissipating heat power and/or optical power from the optical fiber component.