Low noise and low distortion AM/FM converter with frequency modulated 1.55 m strained-layer MQW-DFB laser for analog transmission

1997 ◽  
Author(s):  
J. Ohya
Keyword(s):  
Low Noise ◽  
Strained Layer ◽  
Dfb Laser ◽  
Low Distortion ◽  
Analog Transmission

Forty-two-channel analog transmission using a low noise DFB laser module

1990 ◽  
Author(s):  
K. CHINEN ◽  
K. GEN-EI ◽  
R. E. PIDGEON ◽  
H. H. RAND
Keyword(s):  
Low Noise ◽  
Dfb Laser ◽  
Laser Module ◽  
Analog Transmission

Low distortion 1.3 μm strained-layer MQW-DFB laser for AM-SCM transmission systems with large channel capacity

1997 ◽  
Vol 15 (11) ◽  
pp. 2172-2178 ◽  
Author(s):  
M. Ishino ◽  
N. Takenaka ◽  
M. Kito ◽  
K. Fujihara ◽  
N. Ostuka ◽  
...  
Keyword(s):  
Channel Capacity ◽  
Transmission Systems ◽  
Strained Layer ◽  
Large Channel ◽  
Dfb Laser ◽  
Low Distortion

1.55 μm High Speed Partly Gain-Coupled DFB Lasers with Periodically Etched Strained-Layer Quantum Wells

1997 ◽  
Vol 08 (03) ◽  
pp. 475-494 ◽  
Author(s):  
Toshihiko Makino
Keyword(s):  
Quantum Wells ◽  
High Speed ◽  
Carrier Transport ◽  
Stop Band ◽  
Longitudinal Distribution ◽  
Modulation Bandwidth ◽  
Carrier Injection ◽  
Strained Layer ◽  
High Modulation ◽  
Dfb Laser

The high speed performance of partly gain-coupled (GC) DFB lasers consisting of periodically etched strained-layer quantum wells (QW's) is reviewed with comparisons to the equivalent index-coupled (IC) DFB lasers with the same active layers. It is shown that the GC DFB laser has a –3 dB modulation bandwidth of 22 GHz at 10 mW with a stable single mode oscillation at the longer side of the Bragg Stop-band due to in-phase gain coupling. A theoretical analysis is also presented based on the local-normal-mode transfer-matrix laser model which takes into account both the longitudinal distribution of laser parameters and carrier transport effects. The mechanism for high modulation bandwidth of the GC DFB laser is attributed to a higher differential gain due to a reduced carrier transport time which is provided by an effecient carrier injection from the longitudinal etched interface of the QW's.

Tunable Low Noise Amplifier Implementation With Low Distortion Pseudo-Resistance for in Vivo Brain Activity Measurement

2014 ◽  
Vol 14 (5) ◽  
pp. 1357-1363 ◽  
Author(s):  
Zoltan Karasz ◽  
Richard Fiath ◽  
Peter Foldesy ◽  
Angel Rodriguez Vazquez
Keyword(s):  
Brain Activity ◽  
Low Noise ◽  
Low Noise Amplifier ◽  
Activity Measurement ◽  
Low Distortion ◽  
Noise Amplifier
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