Single mode 1.3 ÎŒm InGaAs VCSELs for access network applications

• GaAs-based VCSELs emitting near 1.3 ÎŒm are realized using highly strained InGaAs quantum wells and a large detuning of the cavity resonance with respect to the gain peak. The VCSELs have an oxide aperture for current and optical confinement and an inverted surface relief for suppression of higher-order transverse modes. The inverted surface relief structure also has the advantage of suppressing oxide modes that otherwise appear in VCSELs with a large detuning between the cavity resonance and the gain peak. Under large signal, digital modulation, clear and open eyes and error free transmission over 9 km of single mode fiber have been demonstrated at the OC-48 and 10 GbE bit rates up to 85°C. Here we review these results and present results from a complementary study of the RF modulation characteristics, including second order harmonic and third order intermodulation distortion, relative intensity noise (RIN), and spurious free dynamic range (SFDR). RIN levels comparable to those of single mode VCSELs emitting at 850 nm are demonstrated, with values from -140 to -150 dB/Hz. SFDR values of 100 and 95 dB·Hz2/3 were obtained at 2 and 5 GHz, respectively, which is in the range of those required in radio-over-fiber systems.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)

Nyckelord

Distortion

Dynamic range

High speed

InGaAs

VCSEL

Cavity resonators

Dynamics

Electric conductivity

Electric currents

Fiber optics

Heterojunctions

Intermodulation distortion

Lasers

Modulation

Quantum well lasers

Resonance

Semiconducting indium

Semiconductor materials

Single mode fibers

Surface emitting lasers

Surface structure

Access network

Bit rates

Cavity resonances

Detuning

Digital modulations

Error-free transmission

Gain peaks

Higher-order

Highly strained

Large signals

Laser dynamics

Optical confinement

Oxide-aperture

Quantum wells

Relative intensity noise

Rf modulation

Second orders

Single modes

Spurious-free dynamic range

Surface reliefs

Third-order intermodulation distortion

Transverse modes

Semiconductor lasers

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