A Compact EADFB Laser Array Module for a Future 100-Gb/s Ethernet Transceiver

• Published in: IEEE journal of selected topics in quantum electronics Vol. 17; no. 5; pp. 1191 - 1197
• Main Authors: Kanazawa, S., Fujisawa, T., Ohki, A., Ishii, H., Nunoya, N., Kawaguchi, Y., Fujiwara, N., Takahata, K., Iga, R., Kano, F., Oohashi, H.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-09-2011; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 100-Gb Ethernet; Arrays; Bonding; Distributed feedback laser; EADFB laser array; Electric potential; electro-absorption modulator; Ethernet; InGaAlAs; Lanes; Laser arrays; Lasers; Modulation; Modules; Multiplexing; Optical transmitters; photonic-integrated circuits; Radio frequency; Voltage; Wires
• ISSN: 1077-260X; 1558-4542
• DOI: 10.1109/JSTQE.2011.2124446

A compact electroabsorption modulators integrated distributed feedback (EADFB) laser array module has been developed for 100-Gb/s Ethernet. Four 25-Gb/s EADFB lasers and an optical multiplexer are monolithically integrated on one chip in an area of only 2 mm × 2.6 mm. As a result, a compact 12 mm × 20 mm EADFB laser array module is achieved. A bridge-type RF circuit board is employed to transmit high-frequency, 4 × 25-Gb/s, electrical signals effectively in a narrow package and improve the electrical/optical response of the module. The module has a 3-dB frequency bandwidth of 20 GHz for the four lanes assigned in 100-Gb/s Ethernet. Furthermore, the possibility of realizing low-driving voltage operation is investigated to reduce the power consumption of the module. An error-free transmission through 10 km of single-mode fiber at 100 Gb/s with a modulation voltage of only 1 V is demonstrated.