Title :
High-speed digital Y-branch switch/modulator with integrated passive tapers for fibre pigtailing
Author :
Khan, M.N. ; Miller, B.I. ; Burrows, E.C. ; Burrus, C.A.
Author_Institution :
Lucent Technol., Bell Labs., Holmdel, NJ, USA
fDate :
5/27/1999 12:00:00 AM
Abstract :
A 1×2 digital optical switch in InGaAsP multiple-quantum-wells with an 8 GHz bandwidth is demonstrated, which may also be operated as a wavelength-, polarisation-, and drive-voltage insensitive modulator. The total length of the switch/modulator device is 3 mm which includes passive fan-outs for fibre interconnection. The on-chip insertion loss is 3 dB out of which the Y-branch excess loss is only 0.7 dB. The measured switch crosstalk is -18 dB for a 4 V push-pull bias. Further crosstalk reduction is expected from a more optimised design and improved fabrication processes.
Keywords :
indium compounds; 0.7 dB; 1×2 digital optical switch; 3 dB; 4 V; InGaAsP; InGaAsP multiple-quantum-well; Y-branch excess loss; drive-voltage insensitive modulator; fabrication processes; fibre interconnection; fibre pigtailing; high-speed digital Y-branch switch/modulator; integrated passive tapers; measured switch crosstalk; on-chip insertion loss; optimised design;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990660
