This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
A multi-wavelength channel distributed feedback laser diode array (DFB-LDA) for the low-cost and low-power consumption applications of WDM-based datacentre networks is reported. The gain spectrum and lasing wavelength of each channel are controlled by using selective area growth and E-beam lithography techniques, respectively. To reduce the operation current and parasitic capacitance of the proposed array, an etched mesa buried hetero-structure (EMBH) is introduced. From this study, it was found that an eight-channel 300 μm long λ/4-shifted DFB-LDA has a threshold current of 10 ± 1.5 mA and a side mode suppression ratio of over 50 dB at a current of 50 mA for all channels. A transmission test for this LDA showed a clear eye opening with a dynamic extinction ratio of over 4.5 dB at 10 Gb/s after a 2 km transmission.
References
-
-
1)
-
3. Kwon, O.K.: ‘A 10×10 Gb/s DFB laser diode array fabricated using a SAG technique’, Opt. Express, 2014, 22, (8), pp. 9073–9079 (doi: 10.1364/OE.22.009073).
-
2)
-
5. Kwon, O.K.: ‘1.5 μm and 10 Gb/s etched mesa buried hetero-structure DFB-LD for datacenter networks’, Semicond. Sci. Technol., 2015, 30, (10), pp. 105010–105017 (doi: 10.1088/0268-1242/30/10/105010).
-
3)
-
4. Kwon, O.K.: ‘A 10 × 10 Gb/s DFB-LD array integrated with PLC-based AWG for 100 Gb/s transmission’, IEEE Photonics Technol. Lett., 2014, 26 (21), pp. 2177–2180 (doi: 10.1109/LPT.2014.2349072).
-
4)
-
5)
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2015.3000
Related content
content/journals/10.1049/el.2015.3000
pub_keyword,iet_inspecKeyword,pub_concept
6
6