Zobrazeno 1 - 10
of 555
pro vyhledávání: '"Liam P. Barry"'
Autor:
Seán P. Ó Dúill, Liam P. Barry
Publikováno v:
Photonics, Vol 11, Iss 9, p 813 (2024)
Here, we report on a simplified laser frequency noise measurement technique employing an acousto-optic modulator, a delay line, and a real-time oscilloscope. The technique is a slight modification of the typical delayed heterodyne method. Instead of
Externí odkaz:
https://doaj.org/article/ba032d69dbb54ee19d1b3694076a310e
Autor:
Seán Ó Dúill, Leidy Rodriguez, David Alvarez-Outerelo, Francisco J. Diaz-Otero, Ankit Sharma, Frank Smyth, Liam P. Barry
Publikováno v:
Optics, Vol 4, Iss 4, Pp 551-562 (2023)
We present the results of the detected voltage distribution of a quantum random number generator (QRNG) based on a photonic integrated circuit comprising a semiconductor laser, delay interferometer and photodetector. We find that the integrated QRNG
Externí odkaz:
https://doaj.org/article/a87f6c7b728b456aa9566d49558ace37
Autor:
Sean P. O'duill, Liam P. Barry
Publikováno v:
IEEE Access, Vol 10, Pp 119875-119882 (2022)
We report on a technique that uses RF quadrature demodulation to measure laser FM-noise based on a delayed self-heterodyne setup. The measurement is self-referencing and the FM-noise can be measured with high precision over a sufficiently long durati
Externí odkaz:
https://doaj.org/article/1648e41b9b0c4a5a9071e71407493842
Autor:
Ahmed Galib Reza, Marcos Troncoso-Costas, Colm Browning, Francisco J. Diaz-Otero, Liam P. Barry
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 3, Pp 1-9 (2022)
This work presents the use of a directly modulated laser (DML) in time- and wavelength division multiplexed passive optical networks (TWDM-PONs), in which an EDFA-based booster amplification and an SOA-based pre-amplification are utilized to improve
Externí odkaz:
https://doaj.org/article/93fb0e328bc746ee86d46ec7bd5e2167
Autor:
Marcos Troncoso-Costas, Devika Dass, Colm Browning, Francisco J. Diaz-Otero, Chris G. H. Roeloffzen, Liam P. Barry
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 1, Pp 1-6 (2022)
Flexible Pulse Amplitude Modulation (FlexPAM) consists of the use of non-standard PAM formats, such as PAM-5 or PAM-6, to increase the granularity of the link capacity for a given baud rate. In this paper, we demonstrate FlexPAM systems as a scalable
Externí odkaz:
https://doaj.org/article/cf91862914a445bc9c1be8a2af530ef9
Autor:
Haizhong Weng, Adnan Ali Afridi, Jing Li, Michael McDermott, Huilan Tu, Liam P. Barry, Qiaoyin Lu, Weihua Guo, John F. Donegan
Publikováno v:
APL Photonics, Vol 7, Iss 7, Pp 079901-079901-1 (2022)
Externí odkaz:
https://doaj.org/article/f26ce2ef46ca49ad972496794273cdcb
Autor:
Haizhong Weng, Adnan Ali Afridi, Jing Li, Michael McDermott, Huilan Tu, Liam P. Barry, Qiaoyin Lu, Weihua Guo, John F. Donegan
Publikováno v:
APL Photonics, Vol 7, Iss 6, Pp 066103-066103-10 (2022)
The Kerr soliton frequency comb is a revolutionary compact ruler of coherent light that allows applications from precision metrology to quantum information technology. The universal, reliable, and low-cost soliton microcomb source is key to these app
Externí odkaz:
https://doaj.org/article/605246f8cb104a06a8895193e999769d
Publikováno v:
APL Photonics, Vol 5, Iss 4, Pp 041301-041301-5 (2020)
We experimentally demonstrate the world’s first field-programmable gate-array-based real-time fiber nonlinearity compensator (NLC) using sparse K-means++ machine learning clustering in an energy-efficient 40-Gb/s 16-quadrature amplitude modulated s
Externí odkaz:
https://doaj.org/article/88913ce5b9bd42a2adac0a26e7040af0
Autor:
Sean P. O’Duill, Liam P. Barry
Publikováno v:
Photonics, Vol 9, Iss 2, p 83 (2022)
We present comprehensive numerically simulated scans of the spectral evolution of the output from a single-mode semiconductor laser diode undergoing external light injection. The spectral scans are helpful to understand the different regimes of opera
Externí odkaz:
https://doaj.org/article/b6bf52453dfc471a97d7135196342660
Publikováno v:
IEEE Photonics Journal, Vol 10, Iss 1, Pp 1-11 (2018)
Numerical and experimental investigations are carried out on the performance of parallelized Kalman filters applied for mitigation of the excess phase noise of fast tunable lasers. Based on the characterization of the phase noise of a sampled grating
Externí odkaz:
https://doaj.org/article/a8bf16af6d9f4e2ebad6f02d02d8953e