G. Sherlock

Optical pulse pattern generation for self-synchronizing 100 Gbit/s networks

Summary form only given. This paper describes active delay line devices constructed using hybrid semiconductor/passive optical waveguide technology. The application of these devices to derivation of a timing reference pulse and all-optical header recognition and self-routing of ultrafast packages with multibit addresses is demonstrated. The basic functions required to construct an all-optical self-routing asynchronous packet-switched network are developed.

Properties of facet-coated 1.3 mu m InGaAsP/InP MQW lasers

Multiple quantum well (MQW) external cavity lasers and optical amplifiers operating in the 1.3 mu m optical fiber communications window are described. The device designs and fabrications are discussed. It is demonstrated that MQW devices offer enhanced characteristics when compared with conventional bulk devices. An MQW laser with a single facet coat in an external cavity was measured to have a tuning range of 160 nm from 1.255 mu m to 1.417 mu m. The device had a peak power of over 40 mW at 1.336 mu m, and a side mode suppression ratio of more than 40 dB. An optical amplifier with a length of 500 mu m had a bandwidth of 110 nm, a 18 dB single-pass gain, and saturated output power of 14 dBm (25 mW).<<ETX>>

Recent progress in high performance InGaAsP optical amplifiers and multiple quantum well devices

Techniques for reducing the polarization sensitivity and suppressing the facet reflectivity of semiconductor optical amplifiers are reviewed. Results for 1.3- and 1.5- mu m amplifiers are discussed. The benefits of multiple-quantum-well (MQW) devices are demonstrated by enhanced tuning range external cavity devices and by high-saturated-output-power, fast-gain-recovery amplifiers.<<ETX>>