Details

Autor(en) / Beteiligte

• den Besten, J.H.
• Broeke, R.G.
• van Geemert, M.
• Binsma, J.J.M.
• Heinrichsdorff, F.
• van Dongen, T.
• de Vries, T.
• Bente, E.A.J.M.
• Leijtens, X.J.M.
• Smit, M.K.

Titel

A compact digitally tunable seven-channel ring laser

Ist Teil von

• IEEE photonics technology letters, 2002-06, Vol.14 (6), p.753-755

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2002

Link zum Volltext

• IEEE_Xplore

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• A seven-channel ring laser was realized by monolithic integration of a compact 4/spl times/4 PHASAR (de)multiplexer with four amplifiers in InP. The PHASAR was fabricated using a double-etch technique, enabling a total size of the ring laser of only 1/spl times/1.5 mm/sup 2/. Light was coupled out via the outer array waveguides. Reflections are minimized by using mode filters and angled facets. Threshold-currents of 70 mA and a sidemode suppression ratio of 40 dB were measured. In principle, a ring laser with N amplifiers can produce 3N-3 different wavelengths.