Abstract

The thermo-optic mechanism provides a simple means of tuning the wavelength of interferometric optical multiplexers constructed from planar silica waveguides upon a silicon substrate. Frequency-domain measurements of the tuning response permit an understanding of the tuning mechanism that is relevant to the design of components for applications in which wavelength-tracking error and cross-talk penalty are important. Measurements on a prototype device have shown a primary low-pass breakpoint at 360 Hz but have also highlighted the possibility of secondary mechanisms affecting the low-frequency response. A continually increasing phase lag at higher frequencies has also been detected and must be allowed for in control-circuit design.

© 1987 Optical Society of America

Optical bistability by photothermal displacement in prism coupling into planar waveguides

W. Lukosz, P. Pirani, and V. Briguet
Opt. Lett. 12(4) 263-265 (1987)

Effect of carrier diffusion on the nonlinear response of optical waveguides

Wayne M. Gibbons and Dror Sarid
Opt. Lett. 12(8) 564-566 (1987)

Influences of the drawing conditions on optical characteristics in undoped-silica-core single-mode fibers

Fumiaki Hanawa, Yoshinori Hibino, Makoto Shimizu, Hiroyuki Suda, and Masaharu Horiguchi
Opt. Lett. 12(8) 617-618 (1987)

All-optical flip-flop operation in an optical bistable device using two lights of different frequencies

Kyo Inoue
Opt. Lett. 12(11) 918-920 (1987)

Stress-induced tuning of a diode-laser-excited monolithic Nd:YAG laser

Adelbert Owyoung and Peter Esherick
Opt. Lett. 12(12) 999-1001 (1987)