scholarly journals Distributed Feedback Laser Based on Tunable Photonic Hypercrystal

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4065
Author(s):  
Bartosz Janaszek ◽  
Paweł Szczepański
Keyword(s):  
Active Material ◽  
Laser Action ◽  
Distributed Feedback ◽  
Single Frequency ◽  
Distributed Feedback Laser ◽  
Mode Suppression ◽  
Effective Dispersion ◽  
Dfb Laser ◽  
Material Forming ◽  
Side Mode

In this work, we investigate the generation of light in a distributed feedback (DFB) laser composed of periodically arranged layers of hyperbolic medium and active material forming a 1D photonic hypercrystal (PHC). The scope of our study covers the analysis of laser action in the presence of different types of dispersion that are achievable in a hyperbolic medium. Using the example of a PHC structure consisting of graphene-based hyperbolic medium, we demonstrate the possibility of controlling laser action by tuning effective dispersion. Our analysis reveals the possibility of obtaining a single-frequency generation with high side-mode suppression and controllable wavelength of operation. Moreover, we present a new mechanism for the modulation of laser amplitude arising from voltage-controllable dispersion of hyperbolic medium.

scholarly journals 1310 nm hybrid InP/InGaAsP on silicon distributed feedback laser with high side-mode suppression ratio

2015 ◽  
Vol 23 (7) ◽  
pp. 8489 ◽  
Author(s):  
Helene Duprez ◽  
Antoine Descos ◽  
Thomas Ferrotti ◽  
Corrado Sciancalepore ◽  
Christophe Jany ◽  
...  
Keyword(s):  
Suppression Ratio ◽  
Distributed Feedback ◽  
Distributed Feedback Laser ◽  
Side Mode Suppression Ratio ◽  
Mode Suppression ◽  
High Side ◽  
Side Mode

scholarly journals Electrically injected parity-time symmetric distributed feedback laser diodes (DFB) for telecom applications

Nanophotonics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 1309-1317
Author(s):  
Vincent Brac de la Perrière ◽  
Quentin Gaimard ◽  
Henri Benisty ◽  
Abderrahim Ramdane ◽  
Anatole Lupu
Keyword(s):  
Optical Transmission ◽  
Light Propagation ◽  
Optical Feedback ◽  
Laser Diodes ◽  
Distributed Feedback ◽  
Single Frequency ◽  
Distributed Feedback Laser ◽  
New Paradigm ◽  
Time Symmetry ◽  
Dfb Laser

Abstract The new paradigm of parity-time symmetry in quantum mechanics has readily been applied in the field of optics with numerous demonstrations of exotic properties in photonic systems. In this work, we report on the implementation of single frequency electrically injected distributed feedback (DFB) laser diodes based on parity-time symmetric dual gratings in a standard ridge waveguide configuration. We demonstrate enhanced modal discrimination for these devices as compared with index or gain coupled ones, fabricated in the same technology run. Optical transmission probing experiments further show asymmetric amplification in the light propagation confirming the parity-time symmetry signature of unidirectional light behavior. Another asset of these complex coupled devices is further highlighted in terms of robustness to optical feedback.

Integrated Distributed Feedback Laser and Optical Amplifier

1991 ◽  
Vol 240 ◽  
Author(s):  
N. K. Dutta ◽  
J. Lopata ◽  
R. Logan ◽  
T. Tanbun-Ek
Keyword(s):  
Active Region ◽  
Spectral Width ◽  
Optical Amplifier ◽  
Distributed Feedback ◽  
Performance Characteristics ◽  
Distributed Feedback Laser ◽  
Electrical Isolation ◽  
Current Confinement ◽  
Dfb Laser ◽  
And Performance

ABSTRACTThe fabrication and performance characteristics of an integrated distributed feedback (DFB) laser and optical amplifier structure are described. The structure utilizes semi-insulating Fe doped InP layers for current confinement to the active region, electrical isolation between the two sections and for lateral index guiding. The amplified output has a slope of 1 mW/mA of laser current with the amplifier biased at 150 mA which is a factor of 5 larger than that for a typical laser. The laser emits near 1.55 μm and the spectral width under modulation of the amplified output is considerably smaller than that for a DFB laser for the same on/off ratio.

Distributed feedback laser action in sol–gel glass symmetric waveguides

2003 ◽  
Vol 5 (2) ◽  
pp. L1-L4 ◽  
Author(s):  
Lei Shi ◽  
Guo-xuan Zhang ◽  
Jun Wang ◽  
Dennis Lo
Keyword(s):  
Sol Gel ◽  
Laser Action ◽  
Distributed Feedback ◽  
Distributed Feedback Laser

scholarly journals Mode Suppression in Injection Locked Multi-Mode and Single-Mode Lasers for Optical Demultiplexing

Photonics ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 27 ◽  
Author(s):  
Kevin Shortiss ◽  
Maryam Shayesteh ◽  
William Cotter ◽  
Alison Perrott ◽  
Mohamad Dernaika ◽  
...  
Keyword(s):  
Active Material ◽  
Single Mode ◽  
Optical Filters ◽  
Optical Injection ◽  
Single Frequency ◽  
Q Factor ◽  
Monolithically Integrated ◽  
Mode Suppression ◽  
Locking Range ◽  
Fabry Perot

Optical injection locking has been demonstrated as an effective filter for optical communications. These optical filters have advantages over conventional passive filters, as they can be used on active material, allowing them to be monolithically integrated onto an optical circuit. We present an experimental and theoretical study of the optical suppression in injection locked Fabry–Pérot and slotted Fabry–Pérot lasers. We consider both single frequency and optical comb injection. Our model is then used to demonstrate that improving the Q factor of devices increases the suppression obtained when injecting optical combs. We show that increasing the Q factor while fixing the device pump rate relative to threshold causes the locking range of these demultiplexers to asymptotically approach a constant value.

Sign in / Sign up

Export Citation Format

Share Document