Title :
Widely Wavelength-Tunable DFB Laser Array Integrated With Funnel Combiner
Author :
Ishii, Hiroyuki ; Kasaya, Kazuo ; Oohashi, Hiromi ; Shibata, Yasuo ; Yasaka, Hiroshi ; Okamoto, Katsunari
Author_Institution :
NTT Corp., Kanagawa
Abstract :
A wavelength-tunable distributed feedback (DFB) laser array integrated with a funnel combiner is described. Two types of optical combiner, namely a multimode interferometer (MMI) combiner and a funnel combiner, are compared theoretically and experimentally. It is shown that the funnel combiner is superior in terms of wavelength dependence and fabrication tolerance. The laser module covers the full C-band wavelength range ( ~38 nm), and a high fiber output power of 40 mW (16 dBm) is obtained with stable single-mode operation.
Keywords :
distributed feedback lasers; electromagnetic wave interferometers; laser arrays; laser tuning; optical fibre communication; optical transmitters; semiconductor lasers; fabrication tolerance; funnel combiner; laser module; multimode interferometer combiner; optical combiner; power 40 mW; wavelength dependence; wavelength tunable distributed feedback laser array; Distributed feedback devices; Fiber lasers; Laser feedback; Laser stability; Laser theory; Optical arrays; Optical device fabrication; Optical feedback; Optical interferometry; Power lasers; Distributed feedback (DFB) lasers; optical fiber communications; optical transmitters; tunable lasers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2007.903594
