Opto-VLSI-based tunable single-mode fiber laser

Abstract

Abstract:A new tunable fiber ring laser structure employing an Opto-VLSI processor and an erbium-doped fiber amplifier (EDFA) is reported. The Opto-VLSI processor is able to dynamically select and couple a waveband from the gain spectrum of the EDFA into a fiber ring, leading to a narrowlinewidth high-quality tunable laser output. Experimental results demonstrate a tunable fiber laser of linewidth 0.05 nm and centre wavelength tuned over the C-band with a 0.05nm step. The measured side mode suppression ratio (SMSR) is greater than 35 dB and the laser output power uniformity is better than 0.25 dB. The laser output is very stable at room temperature.

Reconfigurable optical power splitter/combiner based on Opto-VLSI processing

“…A collimated beam incident onto the Opto-VLSI processor is diffracted along different directions, where the power of each diffracted beam depends on the multicasting phase hologram. The beam multicasting resolution, or minimum splitting angle relative to the zeroth order diffraction beam, is given by [19] arcsin…”

Photonic microwave filter employing an opto-VLSI-based adaptive optical combiner

“…As shown in Fig. 1, an Opto-VLSI processor comprises an array of liquid crystal (LC) cells driven by a Very-Large-Scale-Integrated (VLSI) circuit [13,14] T the LC and the aluminum mirror to accomplish polarization-insensitive operation. The voltage level for each pixel can individually be controlled by using a few memory elements that select a discrete voltage level and apply it, through the electrodes, across the LC cell.…”

Tunable Fibre Lasers Based on Optical Amplifiers and an Opto-VLSI Processor

“…Recently, a novel tunable fiber laser employing an Opto-VLSI processor has been demonstrated (Xiao et al, 2009). The Opto-VLSI processor is able to arbitrarily select narrowband optical signals from the amplified spontaneous emission (ASE) spectrum of an EDFA and inject them into a recirculating fiber ring to generate laser signals at arbitrary wavelengths.…”