Related Experiment Video
Updated: Jun 12, 2026

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
Published on: July 25, 2022
Guided-wave multi/demultiplexers with high stopband rejection
Abstract:
A new guided-wave multi/demultiplexer with high stopband rejection is made using high-silica embedded channel waveguides. This consists of three directional couplers of the same structure, that is, the second and third directional couplers are connected with two output waveguides from the first directional coupler, which suppresses undesired optical signals. This optical device is fabricated using low temperature CVD, lithography, and a reactive ion etching process. It is possible to apply a high-reliability fail-safe module, two-way repeater transmission module using wavelength division multiplexing; it also has other uses.
More Related Videos
Related Concept Videos
Parallel Resonance
Clipper Circuit
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
Bandpass Sampling
A bandpass signal has a spectrum with a lower frequency limit, denoted as ω1, and an upper frequency limit, denoted as ω2. The spectrum...
Active Filters
Design Example: Capacitance Multiplier Circuit
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
Passive Filters
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff frequency...

