The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The experimental results of a hybrid, fiber-remoted millimeter-wave/free-space optical communications link are presented. Multi-Gb/s data rates are independently demonstrated using millimeter-wave and optical carriers.
We present an all optical technique to demodulate THz signals on optical carriers using a standard optical phase modulator and an RF synthesizer. Noise floor as low as −95 dBc/Hz is reached at 700 GHz.
We report dispersion tolerance enhancement using optical Duobinary detection for optimized 20–70 Gbit/s NRZ Transmission over up to 45-km as a low cost way of dispersion tolerance enhancement in high rate transmission systems. We show that maximum reach increases compared to standard NRZ transmission/detection respectively.
By exploiting multiple non-degenerate four-wave mixing in silicon-organic hybrid slot waveguide and 16-ary phase-shift keying signals, we implement three-input (A, B, C) multicasted 160-Gbit/s optical hexadecimal addition/subtraction (A+B−C, A+C−B, B+C−A, A+B+C, A−B−C, B−A−C). Performance is evaluated by error vector magnitude and dynamic range of signal power.
We describe a rigorous and physically transparent theory of enhancement of third order nonlinear optical processes achieved in plasmonic structures. The results show that while the effective nonlinear index can be enhanced by many orders of magnitude, due to high metal losses the most relevant figure of merit, the amount of phase shift per one absorption length remains very low.
The ability to map a wideband signal to multiple, arbitrarily spaced new frequencies was long recognized as missing capability that could lead to fundamentally new means for signal processing and channel distribution. Its simplest form, frequency conversion, has been used in the past to reconfigure the link, but was also regarded as lossy and channel-impairing process. Indeed, conventional link design...
A novel technique to achieve subtraction of two optical signals based on Four Wave Mixing is presented. It utilizes the subtraction of idler wavelengths by applying a π/2 radians relative phase shift between pump wavelengths.
A simple spurious-free microwave photonic filters (MPF) employing the optical frequency comb (OFC) with quadratic phase, which can be freely tuned without the rigid constraint of the Nyquist zone, is proposed and demonstrated.
We experimentally demonstrate wavelength conversions of 50-Gbps 36QAM and 60-Gbps 64QAM through four-wave mixing in highly-nonlinear fiber. Error free operations are successfully achieved for converted high-order QAMs with negligible power penalty at BER of 10−3.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.