Related Experiment Video
Updated: Feb 2, 2026

Patterning Cells on Optically Transparent Indium Tin Oxide Electrodes
Published on: August 20, 2007
Indium Phosphide Photonic Integrated Circuits for Free Space Optical Links
Hongwei Zhao1, Sergio Pinna2, Bowen Song3
1Department of Electrical and Computer Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, USA (hwzhao@ece.ucsb.edu).
None:
An indium phosphide (InP)-based photonic integrated circuit (PIC) transmitter for free space optical communications was demonstrated. The transmitter consists of a sampled grating distributed Bragg reflector (SGDBR) laser, a high-speed semiconductor optical amplifier (SOA), a Mach-Zehnder modulator, and a high-power output booster SOA. The SGDBR laser tunes from 1521 nm to 1565 nm with >45 dB side mode suppression ratio. The InP PIC was also incorporated into a free space optical link to demonstrate the potential for low cost, size, weight and power. Error-free operation was achieved at 3 Gbps for an equivalent link length of 180 m (up to 300 m with forward error correction).
Related Concept Videos
Covalently Linked Protein Regulators
These groups modify specific amino acids in a protein....
X-linked Traits
Space Trusses
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
State Space Representation
Consider an RLC circuit, a...
Second-Order Circuits
Input signals typically originate from voltage or current sources, with the output often representing voltage across the capacitor and/or current through the inductor. For example, in...
Space Trusses: Problem Solving
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...

