Title :
Continuous time realization of time-stretch ADC
Author :
Valley, George C. ; Sefler, George A. ; Chou, Jason ; Jalali, Bahram
Author_Institution :
Electron. & Photonics Lab., Aerosp. Corp., El Segundo, CA
Abstract :
We present computational and experimental results for the time-stretch photonic ADC that show this technology can be used to compress bandwidth and digitize continuous-time RF signals. The key to continuous time operation is our demonstration that novel low-loss dispersive elements, such as chirp fiber Bragg gratings, can replace lossy dispersion compensation fiber in the time stretch ADC. Carrier-to-noise ratio calculations are presented showing the impact of CFBGs on design of a high-resolution continuous-time ADC
Keywords :
Bragg gratings; analogue-digital conversion; microwave photonics; optical fibre dispersion; radio-over-fibre; carrier-to-noise ratio; chirp fiber Bragg gratings; continuous-time RF signals; dispersion compensation fiber; high-resolution continuous-time ADC; low-loss dispersive elements; time-stretch photonic ADC; Bandwidth; Bragg gratings; Chirp; Dispersion; Fiber gratings; Fiber lasers; Optical modulation; Optical pulses; Pulse modulation; Sampling methods; Analog-digital conversion; Gratings; Optical fiber dispersion; Optical modulation; Optical propagation in dispersive media;
Conference_Titel :
Microwave Photonics, 2006. MWP '06. International Topical Meeting on
Conference_Location :
Grenoble
Print_ISBN :
1-4244-0203-4
Electronic_ISBN :
1-4244-0204-2
DOI :
10.1109/MWP.2006.346529
