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.

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 Особенности одночастотной генерации в квантово-каскадных лазерах спектрального диапазона 7.5-8.0 μm с малой длиной резонатора

2022 ◽  
Vol 48 (5) ◽  
pp. 7
Author(s):  
А.В. Бабичев ◽  
Е.С. Колодезный ◽  
А.Г. Гладышев ◽  
Д.В. Денисов ◽  
Н.Ю. Харин ◽  
...  
Keyword(s):  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Threshold Current ◽  
Wavelength Shift ◽  
Quantum Cascade ◽  
Mode Suppression ◽  
Fabry Perot ◽  
Lasing Regime ◽  
Temperature Tuning ◽  
Cascade Lasers

The possibility of realizing single-mode emission in quantum-cascade lasers due to modulation of output optical losses in a Fabry-Perot cavity is demonstrated. For the active region of the 7.5–8.0 μm spectral range, two-phonon resonance design we used thus the 50 stages and waveguide layers based on indium phosphide made it possible to realize single-mode lasing at 7.765 μm and at temperature of 292 K. Side-mode suppression ratio was about 24 dB and remained the same with an increase in the current pumping up to 1.2 of the threshold current values. The coefficient of wavelength shift with temperature (temperature tuning) in the single-mode lasing regime was 0.56 nm / K.

Mode Suppression of Single-mode Micromachined Fabry-Perot Semiconductor Lasers

1999 ◽  
Vol 20 (5) ◽  
Author(s):  
Dayi Li ◽  
Su Wang ◽  
Jianguo Chen ◽  
Yan Li ◽  
Yang Lu
Keyword(s):  
Semiconductor Lasers ◽  
Single Mode ◽  
Mode Suppression ◽  
Fabry Perot

scholarly journals Tunable single-mode chip-scale mid-infrared laser

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Euijae Shim ◽  
Andres Gil-Molina ◽  
Ohad Westreich ◽  
Yamac Dikmelik ◽  
Kevin Lascola ◽  
...  
Keyword(s):  
Output Power ◽  
High Performance ◽  
Quantum Cascade Lasers ◽  
Single Mode ◽  
Single Frequency ◽  
Mid Infrared ◽  
Mode Suppression ◽  
Sensing Applications ◽  
Interband Cascade Laser ◽  
On Chip

AbstractPortable mid-infrared (mid-IR) spectroscopy and sensing applications require widely tunable, chip-scale, single-mode sources without sacrificing significant output power. However, no such lasers have been demonstrated beyond 3 μm due to the challenge of building tunable, high quality-factor (Q) on-chip cavities. Here we demonstrate a tunable, single-mode mid-IR laser at 3.4 μm using a tunable high-Q silicon microring cavity and a multi-mode Interband Cascade Laser. We achieve single-frequency lasing with 0.4 mW output power via self-injection locking and a wide tuning range of 54 nm with 3 dB output power variation. We further estimate an upper-bound effective linewidth of 9.1 MHz and a side mode suppression ratio of 25 dB from the locked laser using a scanning Fabry-Perot interferometer. Our laser platform based on a tunable high-Q microresonator can be expanded to higher wavelength quantum-cascade lasers and lead to the development of compact, high-performance mid-IR sensors for spectroscopic applications.

scholarly journals Extraordinary Optical Transmission by Hybrid Phonon–Plasmon Polaritons Using hBN Embedded in Plasmonic Nanoslits

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1567
Author(s):  
Shinpei Ogawa ◽  
Shoichiro Fukushima ◽  
Masaaki Shimatani
Keyword(s):  
Optical Transmission ◽  
Hexagonal Boron Nitride ◽  
Incident Angle ◽  
Optical Filters ◽  
Extraordinary Optical Transmission ◽  
Light Manipulation ◽  
Rigorous Coupled Wave Analysis ◽  
Fabry Perot ◽  
Hyperbolic Dispersion ◽  
Rigorous Coupled Wave

Hexagonal boron nitride (hBN) exhibits natural hyperbolic dispersion in the infrared (IR) wavelength spectrum. In particular, the hybridization of its hyperbolic phonon polaritons (HPPs) and surface plasmon resonances (SPRs) induced by metallic nanostructures is expected to serve as a new platform for novel light manipulation. In this study, the transmission properties of embedded hBN in metallic one-dimensional (1D) nanoslits were theoretically investigated using a rigorous coupled wave analysis method. Extraordinary optical transmission (EOT) was observed in the type-II Reststrahlen band, which was attributed to the hybridization of HPPs in hBN and SPRs in 1D nanoslits. The calculated electric field distributions indicated that the unique Fabry–Pérot-like resonance was induced by the hybridization of HPPs and SPRs in an embedded hBN cavity. The trajectory of the confined light was a zigzag owing to the hyperbolicity of hBN, and its resonance number depended primarily on the aspect ratio of the 1D nanoslit. Such an EOT is also independent of the slit width and incident angle of light. These findings can not only assist in the development of improved strategies for the extreme confinement of IR light but may also be applied to ultrathin optical filters, advanced photodetectors, and optical devices.

scholarly journals Increased Bit Rate Direct Modulation AMO-OFDM Transmission by Optical Injection Using Monolithically Integrated Lasers

2012 ◽  
Vol 24 (11) ◽  
pp. 879-881 ◽  
Author(s):  
Colm Browning ◽  
Kai Shi ◽  
Sylwester Latkowski ◽  
Prince M. Anandarajah ◽  
Frank Smyth ◽  
...  
Keyword(s):  
Optical Injection ◽  
Bit Rate ◽  
Direct Modulation ◽  
Monolithically Integrated

Optimization of Single-/Multi-/Single-Mode Intrinsic Fabry–Perot Fiber Sensors

2012 ◽  
Vol 30 (14) ◽  
pp. 2281-2288 ◽  
Author(s):  
Cheng Ma ◽  
Bo Dong ◽  
E. M. Lally ◽  
Anbo Wang
Keyword(s):  
Single Mode ◽  
Fiber Sensors ◽  
Fabry Perot
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