Results 111 to 120 of about 10,558 (240)
New theory of femtosecond induced changes and nanopore formation [PDF]
, 2011 Recent results confirm the presence of molecular oxygen proving that recombination of dissociated silica bonds does not occur. This combined with the observation of nanopores within the nanograting structure in silica, leads to a new interpretation of ...
Canning, John +3 more
core +1 more source
Laser &Photonics Reviews, EarlyView.This work introduces a customizable mode converter for multimode silicon photonics, enabling precise control over the conversion ratio between optical modes. The device operates across a broad wavelength range (1350–1700 nm) with 15 distinct conversion levels.
Raquel Fernández de Cabo +7 more
wiley +1 more source
Nanoscale resolution interrogation scheme for simultaneous static and dynamic fiber Bragg grating strain sensing [PDF]
, 2012 A combined interrogation and signal processing technique which facilitates high-speed simultaneous static and dynamic strain demodulation of multiplexed fiber Bragg grating sensors is described.
Johnston, Michael +3 more
core +1 more source
Germanium‐Based Mid‐Infrared Integrated Photonics
Laser &Photonics Reviews, EarlyView.The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini +6 more
wiley +1 more source
In situ method for power re-equalization of wavelength pulses inside of OCDMA codes [PDF]
, 2011 A simple in-situ method to equalize power among individual wavelengths pulses representing two-dimensional wavelength-hopping time-spreading OCDMA code originally generated by a fibre Bragg grating-based OCDMA encoder is presented.
Glesk, Ivan +4 more
core +1 more source
Highly Versatile Real‐Time Optical Noise Filtering Through Temporal Cloaking
Laser &Photonics Reviews, EarlyView.Conventional bandpass filtering strategies may be insufficient for recovering optical waveforms under extremely noisy conditions. We demonstrate a temporal‐cloaking denoising strategy enabled by the temporal Talbot effect, which concentrates the coherent signal of interest into short temporal slots while broadband noise remains temporally spread.
Majid Goodarzi +5 more
wiley +1 more source
An optical fiber tip micrograting thermometer
, 2011 An ~12 µm long Bragg grating was engraved in an ~5 µm diameter optical fiber tip by focused ion beam (FIB) milling. An ~10-dB extinction was achieved at 1570 nm with only 11 indentations.
Ding, Ming +4 more
core +1 more source
Dispersion compensating fibre Bragg gratings
, 1998 Broadband Chirped fibre gratings allow the upgrade of the existing non-dispersion shifted fibre network to high data rate operation within the 1.55µm low-loss window.
Laming, R.I. +7 more
openaire +1 more source
Super-step-chirped fibre Bragg gratings
Electronics Letters, 1996 Concatenation of apodised gratings to form a super-step-chirped fibre Bragg grating structure is demonstrated for the first time. Using this scheme, gratings of arbitrary lengths may be constructed for a predetermined wavelength span.
R. Kashyap +3 more
openaire +1 more source
Laser &Photonics Reviews, EarlyView.This work demonstrates a high‐fidelity stability transfer from an optical reference to a high‐repetition‐rate microcomb using a mode‐locked laser bridge. By employing electro‐optic sampling timing detection, femtosecond‐level synchronization and 10−18‐level fractional frequency stability are achieved.
Changmin Ahn +4 more
wiley +1 more source