We study amplifier-less transmission at 400 Gb/s over 80 km with coherent detection.
We present the amplifier technologies, based on high-order Raman amplification, that are currently used in unrepeatered systems.
When an in-line semiconductor laser amplifier is used to amplify several channels simultaneously, it can induce interchannel crosstalk if the amplifier gain is channel dependent.
We show that the chirp from cross-phase-modulation (XPM) dominates the operation of fiber Raman lasers (FRL).
Space-division multiplexed (SDM) systems use multiple spatial-paths in multimode or multi-core fiber to increase the capacity and/or photon-efficiency carried by an optical fiber.
We have demonstrated an amplifying waveguide optical isolator with an integrated electromagnet. This provides a solution to the generally poor magnetic remanence of this type of isolator.
This paper presents some new aspects of mixer operation and shows that the behavior of a mixer, using a resistive diode, can in general be represented by means of an equivalent circuit consisting o
We investigate the amplitude and phase noise of an optical frequency comb based on InAs/InP quantum-dash mode-locked laser. The laser demonstrates low relative intensity noise (
A shot noise, I(t), is a superposition of impulses occurring at random times · · · , t-, to, h , ti, · · · . If the impulses all have the same shape, F(t), then i{t) = E / ' U - u).
Noise on telephone channels has been measured for years with instruments which are constructed to enable reasonably good correlations between the reading obtained and the annoyance of the noise dur
