scholarly journals Spin Laser Local Oscillators for Homodyne Detection in Coherent Optical Communications

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 573
Author(s):  
Nobuhide Yokota ◽  
Hiroshi Yasaka
Keyword(s):  
Spin Polarization ◽  
Optical Communications ◽  
Injection Locking ◽  
Optical Data ◽  
Cavity Surface ◽  
Orthogonal Polarization ◽  
Linear Birefringence ◽  
Polarization Modulation ◽  
Homodyne Detection ◽  
Local Oscillators

We numerically investigate spin-controlled vertical-cavity surface-emitting lasers (spin-VCSELs) for local oscillators, which are based on an injection locking technique used in coherent optical communications. Under the spin polarization modulation of an injection-locked spin-VCSEL, frequency-shifted and phase-correlated optical sidebands are generated with an orthogonal polarization against the injection light, and one of the sidebands is resonantly enhanced due to the linear birefringence in the spin-VCSEL. We determine that the peak strength and peak frequency in the spin polarization modulation sensitivity of the injection-locked spin-VCSEL depend on detuning frequency and injection ratio conditions. As a proof of concept, 25-Gbaud and 16-ary quadrature amplitude modulation optical data signals and a pilot tone are generated, and the pilot tone is used for the injection locking of a spin-VCSEL. An orthogonally-polarized modulation sideband generated from the injection-locked spin-VCSEL is used as a frequency-shifted local oscillator (LO). We verify that the frequency-shifted LO can be used for the homodyne detection of optical data signals with no degradation. Our findings suggest a novel application of spin-VCSELs for coherent optical communications.

Spin polarization modulation for high-speed vertical-cavity surface-emitting lasers

2018 ◽  
Vol 113 (17) ◽  
pp. 171102 ◽  
Author(s):  
Nobuhide Yokota ◽  
Kunpei Nisaka ◽  
Hiroshi Yasaka ◽  
Kazuhiro Ikeda
Keyword(s):  
Spin Polarization ◽  
High Speed ◽  
Cavity Surface ◽  
Polarization Modulation ◽  
Surface Emitting Lasers ◽  
Vertical Cavity Surface ◽  
Emitting Lasers ◽  
Vertical Cavity

High-Speed Semiconductor Vertical-Cavity Surface-Emitting Lasers for Optical Data-Transmission Systems (Review)

2018 ◽  
Vol 44 (1) ◽  
pp. 1-16 ◽  
Author(s):  
S. A. Blokhin ◽  
N. A. Maleev ◽  
M. A. Bobrov ◽  
A. G. Kuzmenkov ◽  
A. V. Sakharov ◽  
...  
Keyword(s):  
Data Transmission ◽  
High Speed ◽  
Optical Data ◽  
Cavity Surface ◽  
Transmission Systems ◽  
Surface Emitting Lasers ◽  
Vertical Cavity Surface ◽  
Emitting Lasers ◽  
Vertical Cavity

MoS2-wrapped microfiber-based multi-wavelength soliton fiber laser

2017 ◽  
Vol 31 (32) ◽  
pp. 1750303 ◽  
Author(s):  
Feifei Lu
Keyword(s):  
Pump Power ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Optical Communications ◽  
Fiber Lasers ◽  
Tunable Filter ◽  
Linear Birefringence ◽  
Erbium Doped ◽  
Potential Applications ◽  
Multi Wavelength

The single-, dual- and triple-wavelength passively mode-locked erbium-doped fiber lasers are demonstrated with MoS2 and polarization-dependent isolator (PD-ISO). The saturable absorber is fabricated by wrapping an MoS2 around a microfiber. The intracavity PD-ISO acts as a wavelength-tunable filter with a polarization controller (PC) by adjusting the linear birefringence. Single-wavelength mode-locked fiber laser can self-start with suitable pump power. With appropriate PC state, dual- and triple-wavelength operations can be observed when gains at different wavelengths reach a balance. It is noteworthy that dual-wavelength pulses exhibiting peak and dip sidebands, respectively, are demonstrated in the experiment. The proposed simple and multi-wavelength all-fiber conventional soliton lasers could possess potential applications in numerous fields, such as sensors, THz generations and optical communications.

Optical Data Link Module for Data Transmission in Smart Catheters

2020 ◽  
Vol 2020 (1) ◽  
pp. 000169-000173
Author(s):  
Jian Li ◽  
Vincent Henneken ◽  
Marcus Louwerse ◽  
Ronald Dekker
Keyword(s):  
Data Transmission ◽  
System Integration ◽  
Electrical Contacts ◽  
Optical Data ◽  
Cavity Surface ◽  
Data Link ◽  
Technology Platform ◽  
Limited Space ◽  
Vertical Cavity Surface ◽  
Link Module

Abstract We demonstrate a stand-alone optical data link module (ODLM) that fits in the limited space budget of smart imaging catheters. The module is based on an extension of the Flex-to-Rigid (F2R) technology platform for miniaturized system integration. The ODLM is a silicon-based interposer that comprises a commercially available Vertical Cavity Surface Emitting Laser (VCSEL), which has its electrical contacts and laser emitting spot on the same surface. With the flexible interconnects, the ODLM reroutes the flip-chipped VCSEL electrical contacts to the side that is perpendicular to the surface of the VCSEL. This enables the ODLM to be mounted on a flex-PCB and fit into the limited space in the distal tip of the smart catheter. An optical fiber that runs in parallel to the catheter shaft is inserted into the through-silicon hole (TSH) of the ODLM and self-aligned to the VCSEL for optical data transmission. The design of the ODLM and the F2R technology platform are introduced, and an ODLM demonstrator is fabricated and presented.

Vertical-Cavity Surface-Emitting Lasers for Optical Data Storage

1996 ◽  
Vol 35 (Part 1, No. 1B) ◽  
pp. 506-507 ◽  
Author(s):  
Hyun-Kuk Shin ◽  
Il Kim ◽  
Eui-Joong Kim ◽  
Jin-Hwan Kim ◽  
Eun-Kyung Lee ◽  
...  
Keyword(s):  
Data Storage ◽  
Optical Data Storage ◽  
Optical Data ◽  
Cavity Surface ◽  
Surface Emitting Lasers ◽  
Vertical Cavity Surface ◽  
Emitting Lasers ◽  
Vertical Cavity

scholarly journals Radiation-Hard ASICs for Optical Data Transmission in the ATLAS Pixel Detector

2005 ◽  
Vol 20 (16) ◽  
pp. 3802-3804
Author(s):  
K. E. Arms ◽  
K. K. Gan ◽  
M. Johnson ◽  
H. Kagan ◽  
R. Kass ◽  
...  
Keyword(s):  
Data Transmission ◽  
Hadron Collider ◽  
Optical Data ◽  
Cavity Surface ◽  
Pixel Detector ◽  
Final Design ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Radiation Hard ◽  
Vertical Cavity

We have developed two radiation-hard ASICs for optical data transmission in the ATLAS pixel detector at the CERN Large Hadron Collider (LHC): a driver chip for a Vertical Cavity Surface Emitting Laser (VCSEL) diode for 80 Mbit/s data transmission from the detector, and a Bi -Phase Mark decoder chip to recover the control data and 40 MHz clock which is received optically by a PIN diode on the detector side. We present comprehensive results from the final design and from irradiation studies of both circuits with 24 GeV protons up to a total dose of 62 Mrad.

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