Distributed Feedback Laser Diodes And Optical Tunable Filters Pdf

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Single mode laser diodes with an electronically tunable wavelength are among the key components needed for advanced applications in optical communications, measurement and sensing.

Show all documents Tunable lasers are needed to reduce the inventory costs associated with different part numbers for fixed wavelength distributed feedback lasers but also to provide new applica- tions such as optical switching and routing which require fast wavelength switching lasers in the nanosecond regime [1], [2]. They are also being used for niche but increasingly important applications such as trace gas detection for environmental emis- sion monitoring and process control [3]. The tuning range of conventional single frequency lasers is approximately 2—5 nm which significantly under-utilizes the available gain bandwidth of multiple quantum well semiconductor lasers more than nm and erbium doped fiber amplifiers about 40 nm in the - or -band.

Applied Optics

Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. Tunable optical-wavelength conversion using an optically-triggerable multielectrode distributed feedback laser diode Abstract: Tunable optical-wavelength conversion with tunability greater than 5 AA using a multielectrode distributed-feedback laser diode DFB LD with a saturable absorber is discussed. This device is not dependent on input polarization and can operate at up to MHz. Preliminary results of an optical switching experiment using the tunable wavelength converter and optical narrowband filter with a DFB LD amplifier are also reported. Article :.

Glossary of Abbreviations. Glossary of Symbols. An Introduction to Optical Communication Systems. Conclusion, Summary and Suggestions. Du kanske gillar. Inbunden Engelska, Spara som favorit.

High-speed Tunable Distributed Amplification Distributed Feedback (TDA-DFB) Lasers

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By offering a single mode oscillation and narrow spectral output, distributed feedback (DFB) semiconductor laser diodes offer excellent optical light sources as well.

Distributed Feedback Laser Diodes and Optical Tunable Filters

A laser diode , LD , injection laser diode ILD , or diode laser is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with electrical current can create lasing conditions at the diode's junction. Driven by voltage, the doped p-n-transition allows for recombination of an electron with a hole. Due to the drop of the electron from a higher energy level to a lower one, radiation, in the form of an emitted photon is generated. This is spontaneous emission. Stimulated emission can be produced when the process is continued and further generate light with the same phase, coherence and wavelength.

Jetzt bewerten Jetzt bewerten. Advances in optical fibre based communications systems have playeda crucial role in the development of the information highway. Byoffering a single mode oscillation and narrow spectral output,distributed feedback DFB semiconductor laser diodes offerexcellent optical light sources as well as optical filters forfibre based communications and dense wavelength divisionmultiplexing DWDM systems.

Wavelength Tunable Laser Diodes and Their Applications

1. Introduction

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