Polymeric phased array wavelength multiplexer operating around 1550nm

A polymeric, optical fibre compatible, 8x8 phased array wavelength multiplexer with 400GHz (3.2nm) channel spacing, has been designed and realised for operation in the 1550nm erbium doped fibre amplifier (EDFA) window. By using bending radii as small as 20mm. the device measures only 64x4 mm. The fibre to fibre insertion loss in the passbands varies between 6.6 and 8.0dB and the crosstalk is -25d

Performance analysis of linear optical amplifiers in dynamic WDM systems

We demonstrate the performance of linear optical amplifiers (LOAs) in a dynamic and reconfigurable wavelength-division-multiplexing (WDM) system. Eight WDM channels, each channel running at 10 Gb/s, are transmitted through two cascaded LOAs. Power transient immune add-drop capability is demonstrated by switching four of the eight channels at rates of 10-100 kHz without affecting the bit-error-rate (BER) or eye pattern. The same WDM system trial using erbium-doped fiber amplifiers instead of LOAs shows identical BER performance for the eight-channel case, but deteriorated eye patterns and bit error penalties for the channel ADD-DROP configuration

CAD-tool for integrated optics

A CAD-tool for simulation and design of integrated optical circuits, based on a professional microwave design system is reported. An example describing the complete design and simulation of a MZI switch is give

Extremely small fabrication tolerant InP-based power-splitting and combining structures by deep etching

Design and realization of extremely small InP-based coupling structures with high performance and good compatibility with other components is reported: 3 dB coupler (90 mu m long, 0.7 dB loss), 1*16 coupler (141*32 mu m), Mach-Zehnder interferometer (0.6 dB loss, -28 dB crosstalk

Space-switching using wavelength conversion at 2.5 Gb/s and integrated phased array routing

Space switching of 2.5 Gb/s optical signals by lambda -conversion in a DBR laser and subsequent routing through a phased array wavelength demultiplexer is demonstrated. A novel component is presented that integrates 3 dB couplers and a phased array to form the passive part of a space switc

A compact phased array based multi-wavelength laser

A phased-array-based multiwavelength laser with InGaAsP active layer has been fabricated in a simple ridge waveguide structure with nine channels spaced by 400 GHz around 1.55 mu m on an area of 3.5*3*2.5 mm/sup 2/. Simultaneous dual channel operation is demonstrate

Flattened response ensures polarization independence of InGaAsP/InP phased array wavelength demultiplexer

A four channel polarization independent phased-array wavelength demultiplexer has been made by using different array orders for TE and TM. The insertion loss is 3.5 dB and the crosstalk is -16 dB. TE/TM peak position difference is only 0.2 nm. The response is flattened over 0.5 of the 1 nm channel spacing, yielding 0.3 nm of polarization independent flattened response for each channe