TH23904B - Optical fiber extender with optional enhancer - Google Patents

Abstract

DC60 (06/05/41) Optical amplifier used for WDM optical signals that consists of a primary amplifier (3) and a power amplifier (11) of a serial optical fiber amplifier. And has an incremental curve that depends on the wavelength The controllable attenuator (5) is connected between the (3) and (11) amplifiers and is controlled by the control device (7). The input to the preliminary amplifier (3) has low power and is amplified to provide an output signal. Where the input channel signal is amplified with various increments, the power amplifier's input signal (11) is energized, allowing a gain different from that of the initial amplifier (3) by adjusting the reduction. Attenuates the attenuation signal (5) for changes in the input signal.The incremental characteristics of the power amplifier (11) can be set so the output signal from the device The amplifiers will have a corresponding spectral increase without Change Likewise, the same increase per spectrum can be maintained for the optical energy of The pump of the power amplifier was changed. And all expander increments changed By adjusting the Attenuation of the attenuator (5), so the gain of the power amplifier does not change. In the amplifier, the lowest possible amplification from the initial amplification episode is added to the signal. The input and output energy are always full from the power amplifier. If the input signal increases, the SNR of the signal through the amplifier will be adjusted to match. Which is to improve the function of The optical network in which the amplifier is used. An optical amplifier device used for a WDM optical signal that consists of a primary amplifier (3) and a power amplifier (11) of a series-connected fiber optic extender. And there are incremental curves depending on the wavelength A controllable attenuator (5) is connected between an amplifier (3) and (11) and is controlled by a control device (7). The input to the preliminary amplifier (3) has low power and is amplified to provide an output signal. Where the input signal is amplified with various increments, the input signal of the power amplifier (11) is very energetic, resulting in a gain different from that of the initial amplifier (3) by adjusting the The attenuation of the attenuator (5) for changes in the input signal, the gain of the power amplifier (11) can be set, so the output signal from the device The amplifiers will have a corresponding spectral increase without Change Likewise, the same increase per spectrum can be maintained for the optical energy of The pump of the power amplifier was changed. And all expander increments changed By adjusting the Attenuation of the attenuator (5), so the gain of the power amplifier does not change. In the amplifier, the lowest possible amplification from the preliminary amplification is added to the signal. The input and output energy are always full from the power amplifier. If the input signal increases, the SNR of the signal through the amplifier will be adjusted to match. Which is to improve the function of The optical network in which the amplifier is used.

Claims (9)

1.Optical amplifying device Where one fiber optic extender Where directed by the presence of a second optical fiber expander And the attenuator is connected between Second optical fiber extender And the first optical fiber extender By the expander of glass fibers The second led is connected to the input beam with low total light energy. And to expand the light to arrange Give it to the first fiber optic extender through the attenuator. And the expansion of the expander Second optical fiber And the signal attenuation of the modulated attenuators To provide light with Total optical power is high enough for one optical fiber expander. 2.Optical amplifying device As stated in Clause 1, where directed by nature With a control device connected to the attenuator to control the attenuation in there By control device It is adjusted to control the change in optical power at the input of the second optical fiber amplifier, which, as a result of the signal attenuation, the incremental value of the first optical fiber amplifier changes in The manner in which the light being output from the first expander has the same value corresponding to the strum as before the replacement. 3.Optical amplifying device As stated in Clause 1, where directed by nature With a control device connected to the attenuator to control the attenuation in there By control device It is tuned to control for the conversion of the optical power of the pump to the first optical fiber amplifier, where the attenuation causes the incremental value of the optical fiber amplifier to remain unchanged. 4. Optical amplifying device As stated in Clause 1, where directed by nature At the smoothing filter of the connected increment between the first and second amplifiers To arrange for compensation Of values depending on the spectrum The value of the optical extender is independent of its length. Wave of optical signal input 5. Optical amplifying device As stated in Clause 1, where directed by nature The meter is connected to measure the power of the input and output light of the first amplifier and connected to provide a signal to the control device. To control the gain of the first amplifier and the attenuation Signal attenuator 6. Optical amplifying device As stated in Clause 1, where directed by nature At a light meter with a filter connected to measure the energy of the first amplifier's output light. At the very least, with two different wavelengths And continue to provide a signal to control equipment To control the fresh value of the first expander And attenuation of the attenuators 7.Optical amplifying device As stated in Clause 1, where directed by nature Where the light meter is connected to measure the energy of the input light of the second amplifier And continue to provide Signal to the control device to increase the value of the first amplifier And the attenuation of the attenuators 8. Optical fiber network to transmit WDM signals consisting of an access point. With one optical amplifier At least Where directed by the manner in which the device extends It consists of two optical fiber expander, a primary and a power amplifier. The initial amplifier receives light on the input line and the power amplifier sends light. Go on the output line And the attenuators connected in between With the preamplifiers and the power amplifiers Create a skew of the incremental value of its output signal. With the control device adjusted to Controls the attenuation of the attenuator so: - For the initial change of the input light to power the amplifier. The gain of the power amplifier will be changed in such a way that the output from the power amplifier's default. Has a value per spectrum as before the change and / or; - For changing the energy pump light to the energy amplifier. With the added value of the power amplifier unchanged 9. Methods of amplification of optical signals traveling at the connection point of optical transmission. The signals of light comprise a number of channels. By the wavelength of the signal Will be different and aligned. Where directed by the steps of: - Simultaneous amplification of the optical signal in the first optical medium with added value in the garithum log unit, where the first linear combination of the first increment and The second is a function of smoothness; - proportional attenuation of the amplified optical signal; - Simultaneous amplification of attenuated optical signals Together in the second optical medium with value Add to the logarithm, which the second linear combination of the first and second trait; - Controls signal attenuation in a manner for the change of light. The input that is energy goes to the first medium. And the expansion in the second medium will change in The manner in which the light output from a second medium depends on the same spectrum as before the transition and / or; - Control of signal attenuation whereby for changes of output light. From the second medium By the extension of the second medium does not change.