Linear, Low Noise Microwave Photonic Systems using Phase and Frequency Modulation

Abstract

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Integrated microwave photonics

“…Beside delay lines and beamformer, the silica PLCs have also been used to demonstrate integrated frequency discriminator [55][56][57] (more details in Section 5.1) and an arbitrary waveform generator [58] (see Section 8.1). Recent investigations in silica PLCs for MWP applications are aimed at increasing the index contrast to 4% (and above) and to reduce the footprint of the device [59].…”

“…Subsequently, the discriminator chip consisting of cascaded Mach-Zehnder interferometers (MZIs) has recently been demonstrated [56,57,151]. The phase discriminator is a 6 th order finite impulse response (FIR) lattice filter Research activities in realizing the on-chip FM discriminators are expected to increase significantly.…”

“…(a) and (c) schematic of the devices, (b) and (d) fabricated and packaged devices, (e) and (f) characterization results of the fundamental RF signals and the IMDs. (a, b, e) are taken from[134], courtesy of the OSA, (c, d, f) are taken from[57], courtesy of the University of California Berkeley.…”