Search

Based on rate equations of semiconductor laser, a symbolically-defined model for optical transmission system performance evaluation and network characterization in both time- and frequency-domains is presented. The steady-state and small-signal characteristics, such as current–photon density curve, current–voltage curve, and input impedance, can be predicted from this model. Two important dynamic characteristics, second-order harmonic distortion and two-tone third-order intermodulation products, are evaluated under different driving conditions. Experiments show that the simulated results agree well with the published data. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 539–542, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22180 [ABSTRACT FROM AUTHOR]

Two simple methods for estimating the potential modulation bandwidth of TO packaging technique are presented. The first method is based upon the comparison of the measured frequency responses of the laser diodes and the TO laser modules, and the second is from the equivalent circuit for the test fixture, the TO header, the submount and the bonding wire. It is shown that the TO packaging techniques used in the experiments can potentially achieve a frequency bandwidth of over 10.5 GHz, and the two proposed methods give similar results. [ABSTRACT FROM AUTHOR]

We report an inexpensive and versatile technique for coupling multichannel waveguides to a fiber array using V-grooves in perspex substrates that are accurately machined by a computer-controlled CO[sub2] laser system. An excess loss of less than 1 dB could be achieved for coupling between 1 x 2, 1 x 3, and 1 x 4 branching circuits and an array of N-port fibers. [ABSTRACT FROM AUTHOR]

Multiwavelength oscillation has been obtained in an erbium-doped fiber laser. A double-pass optical fiber Mach–Zehnder interferometer is employed as a comb filter inside the laser cavity. To reduce the homogeneous linewidth, the erbium-doped optical fiber was immersed in liquid nitrogen. Simultaneous oscillation of ten wavelengths is observed. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 20: 270–272, 1999. [ABSTRACT FROM AUTHOR]