Continuously tunable multi-wavelength transmission filter based on a stabilised fibre-optic interferometer

• Published in: Optics communications Vol. 165; no. 1; pp. 33 - 37
• Main Authors: Ahn, Joon Tae, Lee, Hak Kyu, Jeon, Min-Yong, Lim, Dong Sung, Kim, Kyong Hon
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.07.1999; Elsevier Science
• Subjects: Applied sciences; Circuit properties; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Filters, zone plates, and polarizers; Fundamental areas of phenomenology (including applications); Integrated optics. Optical fibers and wave guides; Interferometer; Optical and optoelectronic circuits; Optical communication systems, multiplexers, and demultiplexers; Optical elements, devices, and systems; Optical filter; Optics; Other fiber-optical devices; Periodic filter; Physics; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); WDM device; Optical filter; Interferometer; 42.79.Sz; 42.79.Ci; WDM device; Periodic filter; 42.81.Wg; 42.81.−i; Optical filters; Mach-Zehnder interferometers; Infrared laser; Tunable filter; Optical communication; Wavelength division multiplexing; Experimental study; Laser diodes
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/S0030-4018(99)00209-6

We report the first successful demonstration, to our knowledge, of a continuously tunable multi-wavelength transmission filter based on environmentally stabilised fibre-optic Mach–Zehnder interferometer. The tunable scheme was achieved with a fine wavelength control through operating temperature adjustment of 1.3-μm laser diode used as light source for the stabilisation scheme. The transmission wavelength of the filter varied linearly with respect to the wavelength change of the stabilisation light source. The overall tuning range and the tuning sensitivity of the transmission wavelength of the tunable filter have been observed to be mainly dependent on those of the stabilisation light source itself.