Title

Toward A Chip-Scale Multiwavelength Modelocked Semiconductor Laser

Keywords

Modelocked lasers; Multiwavelength lasers; Semiconductor lasers; Wavelength division multiplexing

Abstract

We describe a chip-scale version of a multiwavelength modelocked semiconductor laser that produces discrete wavelength channels on a 25 GHz grid in the 1550 nm spectral region. The laser utilizes a two-section semiconductor optical amplifier (SOA) device in a partially external cavity which enables tuning of the laser cavity length. Since the wavelength channels are simply the longitudinal modes of the laser cavity, the channel spacing can be easily adjusted to match arbitrary wavelength division multiplexing (WDM) protocols. The hybridly modelocked semiconductor laser produces 5 ps FWHM pulses at 25 GHz pulse-repetition rate. Conversely, we demultiplex individual axial modes and employ them as continuous wave (CW) WDM sources. The modes are characterized through relative intensity noise (RIN) measurement as well as eye-diagrams of pseudorandom data imposed by an external modulator. The modelocked laser functions dually as a compact source of high speed, ultrashort pulses and as an economical source of CW WDM channels.

Publication Date

12-24-2004

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

5435

Number of Pages

36-47

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.542639

Socpus ID

10444278160 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/10444278160

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