Optical power device protector and optical transmission system using it, and method for protecting optical power device
AssigneeNEC Corporation
InventorYutaka Yano
Life of this patent
Estimating the term…
Abstract
A patch cord into which a collimator pair has been intercalated is attached to the output end of a high-level light amplifier for transmitting high-level light through optical fibers from outside in a replaceable manner. Even if burnout occurs at an end face of an optical fiber and the heat is conducted to the patch cord with collimators that is connected with an optical connector, meltdown by the fiber-fuse phenomenon can be prevented before it reaches the high-power optical amplifier without being propagated to the high-power optical amplifier because heat energy is dissipated at the collimator pair. By this, the high-power optical amplifier can be protected from the fiber-fuse phenomenon.
Claims15
A protector for an optical power device designed to transmit light through optical fibers, comprising:
- being provided at some midpoint of said optical fiber, and including an optical means which passes, among said light, only light in a pre-determined waveband and prevents light in wavebands other than the desired waveband from passing.
An optical transmission system including an optical power device for outputting light, an optical repeater for relaying said light, a receiving device for receiving light from said optical repeater, and an optical fiber for connecting said optical power device, optical repeater, and receiving device with each other, comprising:
- providing a protector which is provided at some midpoint of said optical fiber and which has an optical means for passing, among said light, only light in a pre-determined waveband and preventing light in wavebands other than the desired waveband from passing.
An optical transmission system including an optical power device for outputting light, an optical repeater for relaying said light, a receiving device for receiving light from said optical repeater, and an optical fiber for connecting said optical power device, optical repeater, and receiving device with each other, comprising:
- said optical repeater including an exciting device which includes pumping light source for exciting the substances within said optical fiber and an optical wavelength multiplexer for multiplexing said light and pumping light that is emitted from said pumping light source, and
- said exciting device being provided with a protector which is provided at some midpoint of said optical fiber and which has an optical means for passing, among said light, only light in a pre-determined waveband and preventing light in wavebands other than the desired waveband from passing.
A method for protecting an optical power device designed to transmit light through optical fibers, comprising the steps of:
- suppressing the progress of the fiber-fuse phenomenon by using an optical means for passing, among said light, only light in a pre-determined waveband and preventing light in wavebands other than the desired waveband from passing.
Dependencies are inferred from the claim text.