Distributed Intrusion Sensor Using DFB Laser with Optical Feedback and Saturable Absorber

Distributed feedback photonic crystal fibre (DFB-PCF) laser.

A distributed feedback laser is fabricated in Er3+-doped photonic crystal fibre. Preferential single-mode lasing is obtained with no special consideration of polarisation issues. The results demonstrate practical implementation of a multi-photon writing process for complex structures in these optical fibres. No hydrogen loading and no germanium are involved.

DFB Laser Diode Dynamics with Optoelectronic Feedback

Study on Characteristics of Distributed Feedback (DFB) LASER as Light Source for Optical Fiber Communication System

This paper represents the study of light sources for optical communication through the optical fiber. For this purpose, the ideal light source characteristics have been studied. According to the study, the semiconductor LASER diodes are preferable sources over LEDs. From the family of LASER diodes, Distributed Feedback (DFB) lasers are considered as source. They have low threshold current and h...

Excitability in a semiconductor laser with saturable absorber.

We show that a monolithic and compact vertical cavity laser with intracavity saturable absorber can emit short excitable pulses. These calibrated optical pulses can be excited as a response to an input perturbation whose amplitude is above a certain threshold. Subnanosecond excitable response is promising for applications to novel all-optical devices for information processing or logical gates.

Near-field optical imaging of plasmonic devices using heterodyne optical feedback on Er doped DFB fiber laser

Near field Scanning Optical Microscopy using heterodyne optical feedback on Erdoped DFB fiber laser at =1.55μm is investigated for optical characterizations of plasmonic waveguides. The experimental results are compared with FDTD numerical models. OCIS : 180.4243 (Near field microscopy) 250.5403 (Plasmonics) 310.2790 (Guided waves) Laser Feedback Interferometry (LFI) has been already investiga...