Single-port laser-amplifier modulators for local access
Authors:
- C.A. BurrusCBC.A. Burrus
- G. RaybonGRG. Raybon
- S.C. ShunkSSS.C. Shunk
- N.K. DuttaNDN.K. Dutta
- 1 September 1996
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 8 (9) , 1175-1177
Abstract
We describe a single-port, reflective, waveguide modulator based on semiconductor laser amplifier technology. The single-port geometry reduces the high packaging cost associated with two-port waveguide modulators, while the internal gain of the amplifier compensates for splitting and coupling losses. A modulator with a bulk active layer showed a reflection-mode chip gain of 17 dB at /spl lambda/=1.56 /spl mu/m. When driven with pseudorandom digital data at 100 Mb/s, extinction ratios of >12 dB were observed over the broad wavelength range (20 nm) needed for wavelength division multiplexed systems. Bit-error-rate tests confirmed that there was no distortion penalty, compared to a LiNbO/sub 3/ reference modulator.Keywords
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