In recent years, sensing and communication applications have fueled important
developments of group-IV photonics in the mid-infrared band. In the long-wave range, most …

Germanium is a material of high interest for mid-infrared (MIR) integrated photonics due to
its complementary metal–oxide–semiconductor (CMOS) compatibility and its wide …

Germanium based photonic devices can play a significant role in several applications,
particularly in the so-called fingerprint wavelength region. Here, we review our recent results …

Mid-infrared (mid-IR) silicon photonics is expected to lead key advances in different areas
including spectroscopy, remote sensing, nonlinear optics or free-space communications …

We demonstrate low-loss Ge-rich Si_0. 2Ge_0. 8 waveguides on Si_1− xGe_x (x from 0 to
0.79) graded substrates operating in the mid-infrared wavelength range at λ= 4.6 μm …

Germanium-on-silicon is a highly promising platform for planar photonics for the midinfrared,
due to germanium's wide transparency range. In this letter, we report Ge-on-Si waveguides …

We present Ge rib waveguide devices fabricated on a Ge-on-insulator (GeOI) wafer as a
proof-of-concept Ge mid-infrared photonics platform. Numerical analysis revealed that the …

Germanium (Ge) has played a key role in silicon photonics as an enabling material for
datacom applications. Indeed, the unique properties of Ge have been leveraged to develop …

We report transmission measurements of germanium on silicon waveguides in the 7.5–8.5
μm wavelength range, with a minimum propagation loss of 2.5 dB/cm at 7.575 μm. However …

The photosensitivity of GeS_x binary glasses in response to irradiation to femtosecond
pulses at 800 nm is investigated. Samples with three different molecular compositions were …