Phase and amplitude measurements for high bandwidth optical signals
Citation
Bulus Rossini, L. A., Costanzo Caso, P. A., Paulucci, E., Duchowicz, R., & Sicre, E. E. (2014). Phase and amplitude measurements for high bandwidth optical signals. Optical Fiber Technology, [Volume and Issue not specified in the excerpts], xxx–xxx. doi: http://dx.doi.org/10.1016/j.yofte.2014.05.001.
Keywords
- Phase measurements
- Amplitude measurements
- High bandwidth optical signals
- Optical pulses
- Transport-of-intensity equation
- Fiber optic device(s)
- Passive fiber optic devices
- Dispersive element
- Second order dispersion coefficient
- Quadratic spectral phase modulation
- Single mode optical fibers (SMF)
- Dispersion compensating fiber (DCF)
- Linearly chirped fiber Bragg grating (LCFBG)
- Self-phase modulation (SPM)
- Chromatic dispersion
- Signal-to-Noise Ratio (SNR)
- All-optical signal processing
- Optical communications
- Microwave-photonics
Brief
This paper introduces a novel technique using the transport-of-intensity equation and passive fiber optic devices to measure both the phase and amplitude of optical pulses as short as tens of picoseconds by analyzing the temporal optical power of a signal after undergoing quadratic spectral phase modulation.
Summary
This paper introduces a novel and practical technique for measuring the amplitude and phase of short (tens of picoseconds) optical pulses using the transport-of-intensity equation and simple passive fiber optic devices. The method relies on analyzing the temporal power of a signal after it passes through a dispersive element, offering a cost-effective approach for characterizing high-bandwidth optical signals relevant to optical communication and sensing. Two different fiber optic implementations are proposed and numerically tested.
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