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We report a compact laser on-chip module that is hybrid integrated with photonic circuits. Arrays of III-V MQW lasers were flip-chip bonded onto an SOI interposer along with micro-machined mirrors for optical coupling into a dedicated grating coupler array. This is a new wafer-scale opto-electronic integration platform enabling photonic links with built-in high efficiency light sources.
Sending electrons through photonic crystals (PhC) is of high interest for generating widely tunable, coherent light. We present the novel concept of a tunable laser based on Cerenkov radiation from electrons in a PhC.
High mode confinement and modal sparsity in subwavelength metallic-plasmonic coaxial cavities enable the demonstration of continuous-wave and room-temperature lasing at telecommunication wavelengths in the smallest cavities to date.
We propose an uncooled DWDM system where errors from uncontrolled laser mode-hopping are avoided by using a control protocol based on monitoring SMSR. We describe a proof-of-principle demonstration of a novel uncooled 50GHz DWDM system.
A new control algorithm with reduced mode-hopping is demonstrated for uncooled WDM C-band channel generation from a DS-DBR laser with 100GHz spacing and low thermal drift up to 70°C. 10Gb/s external modulation with transmission over a 25km link is achieved.
One-dimensional nanobeam lasers in which the width of waveguide is parabolically tapered are explained in detail. In the vicinity of the tapered region where Gaussian photonic well is formed, a few high-Q resonant modes are experimentally confirmed. It is also found that the far-field radiation profile is closely associated with the symmetry of the structure.
A polymer-based coupled-ring reflector (CRR) is hybrid-integrated with R-SOA to realize a widely tunable laser diode. The wavelength tuning range is about 35 nm and SMSR is about 32 dB.
20mW C- or L-band ECLs using silicon MEMS electrostatic actuators tune over 5 THz, locking to 25 GHz channels with ±1.25 GHz accuracy and giving DFB-like system performance over a range of environmental conditions.
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