摘要:
An optical fiber for long-distance optical communication networks has a zero dispersion wavelength value in the range of 1560 to 1570 nm and a dispersion gradient value, at a wavelength band of 1550 nm, in the range of 0.055 to 0.075 ps/nm2/km.
摘要:
An optical fiber for an optical network is disclosed. The optical fiber includes a core having a core region having a first refractive index N1, and a refractive index depressed region surrounding the core region and having a second refractive index N2 that is lower than the first refractive index. A clad surrounds the core and having a third refractive index N4. The optical fiber has a zero-dispersion wavelength that is not less than 1555 nm and positioned in a wavelength range which does not exceed L-band. The optical fiber has negative dispersion values in C-band and positive dispersion values in L-band.
摘要:
Disclosed is an optical fiber comprising a center core which forms a passageway for transmitting optical signals and has a refractive index N1, and a cladding which encloses the center core and has a refractive index N0. The optical fiber further comprises an upper core, which has a distribution of refractive indices increased starting from a refractive index N2 (>N0) at its outer circumference to the refractive index N1 at its internal circumference, and a minutely depressed refractive index region, which is interposed between said upper core and cladding and has a refractive index N3. The refractive index N3 is lower than the refractive index N0.
摘要翻译:公开了一种光纤,包括中心芯,其形成用于传输光信号并具有折射率N 1的通道,以及包围中心纤芯并具有折射率N 0的包层 SUB>。 光纤还包括上芯,其具有从其外圆周处的折射率N 2(> N O 2)开始的折射率分布,折射率分布从折射率N 2 在其内圆周处的折射率N 1 N和折射率N 3 3以下的微小凹陷的折射率区域。 折射率N 3 3低于折射率N 0 O 3。
摘要:
An optical fiber for use in a metro network is provided. The optical fiber has a loss of 0.25 dB/km or less in the C-band and the L-band, a zero dispersion wavelength between 1560 nm and 1560 nm, and a dispersion slope of at least 0.074 ps/nm2/km at a wavelength of 1550 nm.
摘要:
An optical fiber for an optical network is disclosed. The optical fiber includes a core having a core region having a first refractive index N1, and a refractive index depressed region surrounding the core region and having a second refractive index N2 that is lower than the first refractive index. A clad surrounds the core and having a third refractive index N4. The optical fiber has a zero-dispersion wavelength that is not less than 1555 nm and positioned in a wavelength range which does not exceed L-band. The optical fiber has negative dispersion values in C-band and positive dispersion values in L-band.
摘要:
An optical fiber having a core that has a graded refractive index profile is disclosed. A clad surrounds the core and traps light within the core. A difference between differential mode delays (DMDs) at wavelengths of about 1300 nm and about 850 nm within the core is increased in a radial direction. The difference between the DMDs at both the wavelengths basically has a value equal to or less than 0.6 ns/km between a position corresponding to 50% of a radius of the core and a center of the core.
摘要:
A mobile communication terminal and method for processing missed events are disclosed. A user can check missed events on a wait screen at a glance and rapidly respond to the missed events. A controller stores the missed events received in a wait state. When the wait state is changed to an enabled state, an event displaying unit displays event icons associated with the missed events on key cells of a touch keypad. When an event icon is touched, a function executing unit executes a function associated with the touched event icon. A display changes from the wait screen to the function executing screen. Since the missed events are displayed as event icons on the touch keypad, a user can read a state of the missed events at a glance. As well, the user can read contents of the missed events that are associated with the event icon touched on the function executing screen, and rapidly respond to the missed events.
摘要:
An optical fiber for use in a metro network is provided. The optical fiber has a loss of 0.25 dB/km or less in the C-band and the L-band, a zero dispersion wavelength between 1560 nm and 1560 nm, and a dispersion slope of at least 0.074 ps/nm2/km at a wavelength of 1550 nm.
摘要:
A method for reducing the hydrogen sensitivity of an optical fiber is disclosed. The method includes a deuterium treatment step of exposing an optical fiber to a gas mixture including a deuterium, so that the optical fiber makes a contact with the deuterium, and a degassing step of degassing the optical fiber treated with the deuterium under a negative pressure condition.
摘要:
A method for reducing the hydrogen sensitivity of an optical fiber is disclosed. The method includes a deuterium treatment step of exposing an optical fiber to a gas mixture including a deuterium, so that the optical fiber makes a contact with the deuterium, and a degassing step of degassing the optical fiber treated with the deuterium under a negative pressure condition.