scholarly journals High spectral purity GaSb-based blazed grating external cavity laser with tunable single-mode operation around 1940nm

2021 ◽  
Vol 29 (21) ◽  
pp. 33864
Author(s):  
Tianfang Wang ◽  
Chengao Yang ◽  
Yi Zhang ◽  
Yihang Chen ◽  
Jinming Shang ◽  
...  
Keyword(s):  
External Cavity ◽  
Single Mode ◽  
Spectral Purity ◽  
External Cavity Laser ◽  
Blazed Grating ◽  
Single Mode Operation ◽  
Mode Operation ◽  
Cavity Laser

Long-Reach Transmission Characteristics of Tunable External Cavity Laser

2015 ◽  
Vol 15 (10) ◽  
pp. 7462-7466
Author(s):  
Su Hwan Oh ◽  
Ki-Hong Yoon ◽  
Seung-Hyun Cho ◽  
Jun-Kyu Seo
Keyword(s):  
Tuning Range ◽  
Optical Network ◽  
External Cavity ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Bragg Reflector ◽  
Passive Optical Network ◽  
Lasing Spectrum ◽  
External Cavity Laser ◽  
Cavity Laser

We report the transmission capability of a tunable external cavity laser (T-ECL) that utilizes a super-luminescent diode (SLD) and a polymer Bragg reflector (PBR) operating with a direct modulation of 2.5 Gb/s for a light source of a long-reach wavelength division multiplexed-passive optical network (WDM-PON). The T-ECL successfully operated at an ambient temperature of −20 °C to 70 °C when employing a cooled SLD. A tuning range of 12-nm is achieved with a tuning power of lower than 80 mW. A side mode suppression ratio of more than 35 dB was obtained for the whole tuning range. The linewidth of the lasing spectrum is less than 0.1 nm at 20 dB from the peak power. The transmission performance of the T-ECL, including an optical bandpass filter (OBPF), is better than that of the T-ECL excluding an OBPF for a long-reach transmission over 80 km of single mode fiber (SMF). The power penalty of the T-ECL is less than 1.4 dB when using an OBPF for an 80-km transmission.

Miniaturized Tunable External Cavity Diode Laser with Single-Mode Operation and a Narrow Linewidth at 633 nm

2011 ◽  
Vol 23 (22) ◽  
pp. 1676-1678 ◽  
Author(s):  
Ahmad Ibrahim Bawamia ◽  
Gunnar Blume ◽  
Bernd Eppich ◽  
Arnim Ginolas ◽  
Stefan Spießerger ◽  
...  
Keyword(s):  
Diode Laser ◽  
External Cavity ◽  
Single Mode ◽  
External Cavity Diode Laser ◽  
Narrow Linewidth ◽  
Single Mode Operation ◽  
Mode Operation
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