Open AccessA Four‐Channel Laser Array with Four 10 Gbps Monolithic EAMs Each Integrated with a DBR Laser
Author(s) -
Sim JaeSik,
Kim SungBock,
Kwon YongHwan,
Baek YongSoon,
Ryu SangWan
Publication year - 2006
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.06.0205.0119
Subject(s) - extinction ratio , laser , materials science , optics , distributed bragg reflector , wavelength , optoelectronics , distributed bragg reflector laser , distributed feedback laser , bandwidth (computing) , biasing , laser power scaling , voltage , electrical engineering , telecommunications , physics , engineering
A distributed Bragg reflector (DBR) laser and a high speed electroabsorption modulator (EAM) are integrated on the basis of the selective area growth technique. The typical threshold current is 4 to 6 mA, and the side mode suppression ratio is over 40 dB with single mode operation at 1550 nm. The DBR laser exhibits 2.5 to 3.3 mW fiber output power at a laser gain current of 100 mA, and a modulator bias voltage of 0 V. The 3 dB bandwidth is 13 GHz. A 10 Gbps non‐return to zero operation with 12 dB extinction ratio is obtained. A four‐channel laser array with 100 GHz wavelength spacing was fabricated and its operation at the designed wavelength was confirmed.