Extending the direct modulation bandwidth by mutual injection locking in integrated coupled DFB lasers

2017 ◽  
Author(s):  
Yuanfeng Mao ◽  
Zhengliang Ren ◽  
Ruikang Zhang ◽  
Hao Wang ◽  
Yongguang Huang ◽  
...  
Keyword(s):  
Injection Locking ◽  
Modulation Bandwidth ◽  
Direct Modulation ◽  
Mutual Injection Locking

scholarly journals Modulation Bandwidth Enhancement of Monolithically Integrated Mutually Coupled Distributed Feedback Laser

2020 ◽  
Vol 10 (12) ◽  
pp. 4375
Author(s):  
Wu Zhao ◽  
Yuanfeng Mao ◽  
Dan Lu ◽  
Yongguang Huang ◽  
Lingjuan Zhao ◽  
...  
Keyword(s):  
Extinction Ratio ◽  
Optical Amplifier ◽  
Injection Locking ◽  
Distributed Feedback ◽  
Modulation Bandwidth ◽  
Bandwidth Enhancement ◽  
Monolithically Integrated ◽  
Locking Range ◽  
Dfb Laser ◽  
Mutual Injection Locking

Modulation bandwidth enhancement of directly modulated semiconductor lasers (DMLs) has attracted broad interest to accommodate the tremendously growing demand for network traffic. In this paper, a monolithically integrated mutually coupled (IMC) laser for the O-band is demonstrated both numerically and experimentally. The direct modulation bandwidth was enhanced utilizing a photon–photon resonance (PPR) effect based on the mutual injection-locking technique. The IMC laser consisted of two distributed feedback (DFB) laser sections with a semiconductor optical amplifier (SOA) section in between. The relationship between the PPR frequency and SOA length was analyzed numerically to achieve a flat modulation response by optimizing the SOA length. Then, an enhanced 3-dB bandwidth of 38.7 GHz was realized experimentally, a nearly threefold enhancement over the modulation bandwidth of a solitary DFB laser at the same bias. Moreover, clear open eyes up to 40 Gb/s transmission over a 25-km single-mode fiber were achieved. Although the dynamic extinction ratio of the eye diagram was 1.1 dB, it can be further improved by increasing the mutual injection locking range of the IMC laser.

Mutual injection locking and coherent beam combining of two thulium doped fiber lasers

Laser Physics ◽  
2010 ◽  
Vol 21 (1) ◽  
pp. 172-175 ◽  
Author(s):  
P. Zhou ◽  
X. L. Wang ◽  
Y. X. Ma ◽  
K. Han ◽  
Z. J. Liu
Keyword(s):  
Fiber Lasers ◽  
Coherent Beam ◽  
Injection Locking ◽  
Coherent Beam Combining ◽  
Beam Combining ◽  
Mutual Injection Locking

12.5‐GHz direct modulation bandwidth of vapor phase regrown 1.3‐μm InGaAsP buried heterostructure lasers

1985 ◽  
Vol 46 (4) ◽  
pp. 344-346 ◽  
Author(s):  
C. B. Su ◽  
V. Lanzisera ◽  
W. Powazinik ◽  
E. Meland ◽  
R. Olshansky ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Modulation Bandwidth ◽  
Direct Modulation ◽  
Buried Heterostructure

Radio Over Fiber-Based Wavelength Division Multiplexed/Time Division Multiplexed Passive Optical Network Architecture Employing Mutual Injection Locked Fabry-Perot Laser Diodes

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Binoy Das ◽  
Paulomi Mandal ◽  
Khaleda Mallick ◽  
Rahul Mukherjee ◽  
Gour Chandra Mandal ◽  
...  
Keyword(s):  
Optical Network ◽  
Laser Diodes ◽  
Radio Over Fiber ◽  
Injection Locking ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Fabry Perot ◽  
Time Division ◽  
Mutual Injection Locking

AbstractWe demonstrate a radio-over-fiber-based hybrid wavelength-division-multiplexed/time division multiplexed passive optical network (PON) to transmit 5 Gbps data rate to serve 32 subscribers. A broadband light source (BLS) is realized by mutual injection locking between two Fabry-Perot laser diodes at the transmission section to seed wavelength-division-multiplexed channels. Mutual injection locking technique is used to enhance the performance over single Fabry-Perot laser diode and 15  dB/Hz improvements in relative intensity noise(RIN) is realized in our proposed network system. All-optical up-conversion of a 10-GHz 1.25 Gbps on off keying radio frequency (RF) signal is achieved using one single-arm Mach-Zehnder modulator (MZM). Transmission performance over 25-km single mode fiber is investigated. Low bit error rate with enhanced eye-diagram is obtained in our proposed system. As a result, the radio over fiber (ROF)-based wavelength-division-multiplexed/time division multiplexed PON set up employing mutually injection locked Fabry-Perot laser diodes can be a better choice in high speed long-haul optical communication system.

A space mode selective light source with over 40 GHz direct modulation bandwidth

2019 ◽  
Vol 58 (SJ) ◽  
pp. SJJA05
Author(s):  
Bingzhou Hong ◽  
Tomotaka Mori ◽  
Shingo Murakami ◽  
Haisong Jiang ◽  
Kiichi Hamamoto
Keyword(s):  
Light Source ◽  
Modulation Bandwidth ◽  
Direct Modulation
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