Abstract: The present specification relates to a heterocyclic compound represented by Formula 1, an organic light emitting device comprising the same, a composition for organic layer of the organic light emitting device, and a method of manufacturing the organic light emitting device.

Abstract: A system for diagnosing and analyzing infrastructure, comprising: a storage unit storing a diagnostic script, which is for collecting system information from a target system or at least one target operating server of the target system; a script transmission unit transmitting the diagnostic script to the target system to diagnose the target system; a system information collection unit receiving the system information from the target system or the at least one target operating server as a result of the running of the diagnostic script; an analysis engine storage unit storing at least one analysis rule corresponding to the target system or the at least one target operating server; and an analysis information generation unit analyzing the system information by using the analysis rule, and generating analysis information regarding the target system and the at least one target operating server based on the results of the analyzing.

Abstract: A system for diagnosing and analyzing infrastructure, comprising: a storage unit storing a diagnostic script, which is for collecting system information from a target system or at least one target operating server of the target system; a script transmission unit transmitting the diagnostic script to the target system to diagnose the target system; a system information collection unit receiving the system information from the target system or the at least one target operating server as a result of the running of the diagnostic script; an analysis engine storage unit storing at least one analysis rule corresponding to the target system or the at least one target operating server; and an analysis information generation unit analyzing the system information by using the analysis rule, and generating analysis information regarding the target system and the at least one target operating server based on the results of the analyzing.

Abstract: The present invention relates to an optical fiber for an optical amplifier and a method for manufacturing the same, which can be applied to an optical transmission system in the S-band area (4130 nm-1530 nm). According to the present invention, silica is used as a base material and the optical fiber for an optical amplifier contains Tm3+ ions and metal ions in a first core layer formed on an inner surface of a second core layer using the MCVD (Modified Chemical Vapor Deposition) method and a solution doping method whereby the practicability and productivity of the optical fiber are remarkably improved.

Abstract: Disclosed is a low-attenuation single-mode optical fiber having a photoconductive core and a clad, which shows very low OH concentration in MFD (Mode Field Diameter) region. The optical fiber includes a core positioned at its center for photoconduction, and a dehydrated clad and a base clad which are coated on the clad in order. The dehydrated clad has a substantially identical refractive index to the base clad. A refractive index of the core is greater than those of the dehydrated clad and the base clad. The dehydrated clad has a relatively lower OH concentration than the base clad. The region composed of the core and the dehydrated clad has an MFD region at which OH concentration is less than 0.8 ppb.

Abstract: Disclosed is a low-attenuation single-mode optical fiber having a photoconductive core and a clad, which shows very low OH concentration in MFD (Mode Field Diameter) region. The optical fiber includes a core positioned at its center for photoconduction, and a dehydrated clad and a base clad which are coated on the clad in order. The dehydrated clad has a substantially identical refractive index to the base clad. A refractive index of the core is greater than those of the dehydrated clad and the base clad. The dehydrated clad has a relatively lower OH concentration than the base clad. The region composed of the core and the dehydrated clad has an MFD region at which OH concentration is less than 0.8 ppb.

Abstract: The present invention relates to an optical fiber for an optical amplifier and a method for manufacturing the same, which can be applied to an optical transmission system in the S-band area (4130 nm-1530 nm). According to the present invention, silica is used as a base material and the optical fiber for an optical amplifier contains Tm3+ ions and metal ions in a first core layer formed on an inner surface of a second core layer using the MCVD (Modified Chemical Vapor Deposition) method and a solution doping method whereby the practicability and productivity of the optical fiber are remarkably improved.