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Leif Johansson
Leif Johansson
Freedom Photonics
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Tunable semiconductor lasers: A tutorial
LA Coldren, GA Fish, Y Akulova, JS Barton, L Johansson, CW Coldren
Journal of Lightwave Technology 22 (1), 193, 2004
4402004
High performance InP-based photonic ICs—A tutorial
LA Coldren, SC Nicholes, L Johansson, S Ristic, RS Guzzon, EJ Norberg, ...
Journal of Lightwave Technology 29 (4), 554-570, 2011
1822011
Millimeter-wave modulated optical signal generation with high spectral purity and wide-locking bandwidth using a fiber-integrated optical injection phase-lock loop
LA Johansson, AJ Seeds
IEEE Photonics Technology Letters 12 (6), 690-692, 2000
1632000
Generation and transmission of millimeter-wave data-modulated optical signals using an optical injection phase-lock loop
LA Johansson, AJ Seeds
Journal of Lightwave Technology 21 (2), 511, 2003
1462003
An optical phase-locked loop photonic integrated circuit
S Ristic, A Bhardwaj, MJ Rodwell, LA Coldren, LA Johansson
Journal of Lightwave Technology 28 (4), 526-538, 2009
1362009
Programmable photonic microwave filters monolithically integrated in InP–InGaAsP
EJ Norberg, RS Guzzon, JS Parker, LA Johansson, LA Coldren
Journal of Lightwave Technology 29 (11), 1611-1619, 2011
1272011
Two-dimensional optical beam steering with InP-based photonic integrated circuits
W Guo, PRA Binetti, C Althouse, ML Mašanović, HPMM Ambrosius, ...
IEEE Journal of Selected Topics in Quantum Electronics 19 (4), 6100212-6100212, 2013
972013
Electrically pumped laser transmitter integrated on thin-film lithium niobate
A Shams-Ansari, D Renaud, R Cheng, L Shao, L He, D Zhu, M Yu, ...
Optica 9 (4), 408-411, 2022
912022
Integrated coherent receivers for high-linearity microwave photonic links
A Ramaswamy, LA Johansson, J Klamkin, HF Chou, C Sheldon, ...
Journal of Lightwave Technology 26 (1), 209-216, 2008
832008
Integrated femtosecond pulse generator on thin-film lithium niobate
M Yu, D Barton III, R Cheng, C Reimer, P Kharel, L He, L Shao, D Zhu, ...
Nature 612 (7939), 252-258, 2022
772022
An integrated 40 Gbit/s optical costas receiver
M Lu, H Park, E Bloch, A Sivananthan, JS Parker, Z Griffith, LA Johansson, ...
Journal of Lightwave Technology 31 (13), 2244-2253, 2013
722013
40Gbit/s coherent optical receiver using a Costas loop
H Park, M Lu, E Bloch, T Reed, Z Griffith, L Johansson, L Coldren, ...
Optics express 20 (26), B197-B203, 2012
672012
Highly integrated optical heterodyne phase-locked loop with phase/frequency detection
M Lu, H Park, E Bloch, A Sivananthan, A Bhardwaj, Z Griffith, ...
Optics Express 20 (9), 9736-9741, 2012
672012
High-efficiency, high-speed VCSELs with deep oxidation layers
YC Chang, CS Wang, LA Johansson, LA Coldren
Electronics Letters 42 (22), 1, 2006
672006
36-GHz 140-Mb/s radio-over-fiber transmission using an optical injection phase-lock loop source
LA Johansson, AJ Seeds
IEEE Photonics Technology Letters 13 (8), 893-895, 2001
612001
Chip-based advanced modulation format transmitter
J Barton, L Johansson, M Mashanovitch
US Patent 8,401,399, 2013
582013
Highly linear coherent receiver with feedback
HF Chou, A Ramaswamy, D Zibar, LA Johansson, JE Bowers, M Rodwell, ...
IEEE Photonics Technology Letters 19 (12), 940-942, 2007
542007
Integrated InP-InGaAsP tunable coupled ring optical bandpass filters with zero insertion loss
RS Guzzon, EJ Norberg, JS Parker, LA Johansson, LA Coldren
Optics express 19 (8), 7816-7826, 2011
502011
High output saturation and high-linearity uni-traveling-carrier waveguide photodiodes
J Klamkin, A Ramaswamy, LA Johansson, HF Chou, MN Sysak, ...
IEEE Photonics Technology Letters 19 (3), 149-151, 2007
502007
Towards chip-scale optical frequency synthesis based on optical heterodyne phase-locked loop
S Arafin, A Simsek, SK Kim, S Dwivedi, W Liang, D Eliyahu, J Klamkin, ...
Optics express 25 (2), 681-695, 2017
482017
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