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—A novel velocity-matched distributed balanced pho-todetector with a 50-coplanar waveguide output transmission line has been experimentally demonstrated in the InP/InGaAs material system. Distributed absorption and velocity matching are employed to increase the saturation photocurrent. A common-mode rejection ratio greater than 27 dB has been achieved. The(More)
Buses have historically provided a flexible communications structure in computer systems. However, signal integrity constraints of high-speed electronics have made multi-drop electrical busses infeasible. Instead, we propose an optical data bus for computer interconnections. It has two sets of optical waveguides, one as a fan-out and the other as a fan-in,(More)
We present a free-space optical interconnect system capable of dynamic closed-loop optical alignment using a microlens scanner with a proportional integral and derivative controller. Electrostatic microlens scanners based on combdrive actuators are designed and characterized with vertical cavity surface emitting lasers (VCSELs) for adap-tive optical beam(More)
—A novel velocity-matched distributed balanced pho-todetector with a 50-coplanar waveguide output transmission line has been experimentally demonstrated in the InP–InGaAs material system. Distributed absorption and velocity matching are employed to achieve high-saturation photocurrent. A common mode rejection ratio of 27 dB has been achieved. The RF link(More)
—A novel balanced electroabsorption modulated pho-tonic link for simultaneous suppression of even-order distortions, third-order distortions, laser relative intensity noise (RIN), and common amplified spontaneous emission noise at the same modu-lator bias point was experimentally demonstrated for the first time. By biasing the balanced electroabsorption(More)
We present an electrothermally actuate scanner for board-to-board free-space optic systems capable of zero standby power. U-actuators, brakes, and lens frames are design and characterized with a vertical cavity su laser (VCSELs) for dynamic beam s demonstrate up to 170 µm displacement, speed of 350 µm/s. The mechanical brakes force of 1.6 mN with switching(More)
Phone:+l-ll0-8257338. Fax+l-310-7945513. Abstract: A novel dynamic dispersion compensator has been realized using MEMS microdisks with variable power-coupling ratio. The coupling is controlled by varying waveguide-disk spacing. A gmup velociw dispersion tuning range of 4OOps/mn has been achieved experimentally.' Introduction Dynamic dispersion compensation(More)
Balanced photodetectors are of great interest to analog fiber optic links because they can suppress laser relative intensity noise (RM) and amplified spontaneous emission noise (ASE) from erbium-doped fiber amplifiers (EDFA) [ 11. Because balanced photodetectors can achieve shot noise-limited link performance, the noise figure and spurious-free dynamic(More)