Patricia K. Miller
Veterinary at Foothills Dr, Longmont, CO
License number
Colorado 6007
Issued Date
Aug 31, 1994
Renew Date
Nov 1, 2016
Expiration Date
Oct 31, 2018
Type
Veterinarian
Address
Address
2
4819 Foothills Dr, Longmont, CO 80513
Longmont, CO
Longmont, CO
Professional information
Optical Method And System For Measuring In-Band Crosstalk In Raman Amplifiers
US Patent:
6959150, Oct 25, 2005
Filed:
Dec 23, 2002
Appl. No.:
10/328219
Inventors:
David A Beal - Loveland CO, US
John Bernard Medberry - Windsor CO, US
Patricia S Miller - Berthoud CO, US
John Bernard Medberry - Windsor CO, US
Patricia S Miller - Berthoud CO, US
Assignee:
Agilent Technologies, Inc. - Palo Alto CA
International Classification:
H04B017/00
US Classification:
398 37
Abstract:
A method for measuring in-band crosstalk in an optical amplifier, such as a Raman amplifier, in which a modulated optical signal is generated using an input modulator. The modulated optical signal is passed through the optical amplifier to obtain a first output optical signal, the power level of which is measured when the input modulator is in its off-state. The modulated optical signal is then attenuated by a factor equal to the extinction ratio of the input modulator to obtain an attenuated modulated optical signal which is passed through the optical amplifier to obtain a second output optical signal. The power level of the second output optical signal is measured when the input modulator is in its on-state. The in-band crosstalk is calculated by subtracting the power level of the second output optical signal from the power level of the first output optical signal.
System And Method For Measuring Polarization Dependent Gain Of An Optical Amplifier
US Patent:
6904238, Jun 7, 2005
Filed:
Oct 9, 2002
Appl. No.:
10/267409
Inventors:
David A. Beal - Loveland CO, US
Patricia S Miller - Berthoud CO, US
Patricia S Miller - Berthoud CO, US
Assignee:
Agilent Technologies, Inc. - Palo Alto CA
International Classification:
H04B017/00, H04B010/08
US Classification:
398 37, 398 16
Abstract:
A system and method that effectively measures the polarization dependent gain of an optical amplifier without significantly introducing error into that measurement is provided. A saturating optical signal source generates an optical signal capable of saturating the optical amplifier. A slow polarization scrambler then randomly polarizes the optical signal to yield a polarized optical signal, which is used as an input signal of the optical amplifier. The output signal of the optical amplifier is then transferred to a fast polarization scrambler, resulting in a PDG measurement signal, which is then presented to an optical signal analyzer that measures the intensity level of each channel of the PDG measurement signal. Alternately, a wavelength division multiplexing (WDM) polarization mixer is employed to mix the polarization states of WDM channels of the polarized optical signal from the slow polarization scrambler with respect to each other, yielding the input signal for the optical amplifier under test.