摘要:
A storage management system (10) is a system for connecting a client terminal (30) to a storage apparatus (111) via a communication network. The storage management system (10) includes: a communication unit (21) that receives a reservation request from the client terminal (30); a reservation management unit (221) that reserves a right of use and a time slot of use of the remaining capability of the storage capability in the storage apparatus (111) in accordance with the reservation request, and manages reservation information indicating the result of the reservation; and a ticket issuance unit (222) that issues a reservation ticket showing the reservation information to the client terminal (30), and transmits the reservation ticket to the client terminal (30). The ticket issuance unit (222) issues the reservation ticket only when the remaining capability is confirmed.
摘要:
A storage management system (10) is a system for connecting a client terminal (30) to a storage apparatus (111) via a communication network. The storage management system (10) includes: a communication unit (21) that receives a reservation request from the client terminal (30); a reservation management unit (221) that reserves a right of use and a time slot of use of the remaining capability of the storage capability in the storage apparatus (111) in accordance with the reservation request, and manages reservation information indicating the result of the reservation; and a ticket issuance unit (222) that issues a reservation ticket showing the reservation information to the client terminal (30), and transmits the reservation ticket to the client terminal (30). The ticket issuance unit (222) issues the reservation ticket only when the remaining capability is confirmed.
摘要:
Optical devices including a Faraday rotation devices improved in wavelength and temperature characteristics and an optical attenuator reduced in wavelength dependence and temperature-dependent loss. The Faraday rotation device has permanent magnets magnetized in an axial direction of through-holes, and Faraday elements having a same Faraday rotation direction with respect to a same magnetization direction. The permanent magnets are directed in the same magnetization direction along an optical path, where part of the Faraday elements are accommodated in the through-hole of the permanent magnet, and the remaining Faraday elements are arranged between the magnets, whereby the Faraday elements are to be applied by magnetic fields in opposite directions. For a device variable in Faraday rotation angle, an electromagnet is provided. An input fiber collimator and polarizer are provided on an input side of with the Faraday elements while an analyzer and output fiber collimator are on an output side.
摘要:
The plug connector includes contacts and a block. The contacts are arranged on both sides of the block, and the block is formed at longitudinal ends with projection walls. The receptacle connector includes contacts and a housing. The contacts are arranged on both sides of the block to be opposite to each other in the width direction, and the housing is provided with engaging protrusions engaging the anchoring recess. The housing is further provided between the contacts longitudinally arranged with side walls A higher than upper surfaces of elastic portions of the contacts and with side walls B continuous with the side walls A and higher than upper surfaces of contact portions of the contacts. The plug contacts and the receptacle contacts are brought into contact with each other only after the plug connector and the receptacle connector have been completely fitted with each other.
摘要:
An optical attenuator with increased dynamic range and reduced temperature-dependence over the dynamic range. The optical attenuator has a Faraday rotational angle variable device which applies an external magnetic field to light polarized by a garnet crystal, and a polarizer and an analyzer disposed at the front and rear of the optical axis of the device. There is an angle x formed between the plane of polarization of the light incident to the garnet crystal and the magnetic field orthogonal to the optical axis, where an angle y is formed between the polarizer and the analyzer, and the angle x is set to satisfy {(−z/2)+90×n}−12
摘要:
Optical devices including a Faraday rotation devices improved in wavelength and temperature characteristics and an optical attenuator reduced in wavelength dependence and temperature-dependent loss. The Faraday rotation device has permanent magnets magnetized in an axial direction of through-holes, and Faraday elements having a same Faraday rotation direction with respect to a same magnetization direction. The permanent magnets are directed in the same magnetization direction along an optical path, where part of the Faraday elements are accommodated in the through-hole of the permanent magnet, and the remaining Faraday elements are arranged between the magnets, whereby the Faraday elements are to be applied by magnetic fields in opposite directions. For a device variable in Faraday rotation angle, an electromagnet is provided. An input fiber collimator and polarizer are provided on an input side of with the Faraday elements while an analyzer and output fiber collimator are on an output side.