Title :
Wavelength monitor integrated laser modules for 25-GHz-spacing tunable applications
Author :
Nasu, Hideyuki ; Mukaihara, Toshikazu ; Shinagawa, Tatsuyuki ; Takagi, Tomohiro ; Oike, Mizuki ; Nomura, Takehiko ; Kasukawa, Akihiko
Author_Institution :
Yokohama R&D Labs., Furukawa Electr. Co. Ltd., Kanagawa, Japan
Abstract :
Integration of 25-GHz-spacing wavelength monitors into industry standard butterfly laser modules are successfully achieved through the use of a unique optics. The 2-thermoelectric cooler (TEC) design enables independent temperature control of the laser diode and the wavelength monitor, hence eliminating the temperature dependence of the etalon as well as wavelength variation due to temperature variation and aging. As a result of the independent temperature control, narrowband tuning is easily achieved. Results from a series of thorough wavelength stability tests show that the wavelength variation of these laser modules are well within the ITU-T recommended requirement for 25-GHz channel-spacing dense wavelength-division multiplexing (DWDM) applications throughout 25 years of usage.
Keywords :
ageing; channel spacing; modules; optical communication equipment; optical fibre communication; optical tuning; semiconductor lasers; thermistors; thermoelectric devices; wavelength division multiplexing; 2-thermoelectric cooler design; 25 GHz; DWDM; aging; channel spacing; dense wavelength division multiplexing; etalon; integrated laser modules; laser diode; narrowband tuning; temperature control; wavelength monitor; wavelength stability tests; Diode lasers; Integrated optics; Laser stability; Laser tuning; Monitoring; Optical design; Temperature control; Temperature dependence; Tunable circuits and devices; Wavelength division multiplexing;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2004.841697
