Thermooptic planar polymer Bragg grating OADMs with broad tuning range

Author

Eldada, Louay ; Blomquist, Robert ; Maxfield, Mac ; Pant, Deepti ; Boudoughian, George ; Poga, Constantina ; Norwood, Robert A.

Author_Institution

Telecom Photonics Div., Allied-Signal Inc., Morristown, NJ, USA

Volume

11

Issue

4

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

448

Lastpage

450

Abstract

Tunable optical add/drop multiplexers (OADMs) were achieved by combining thermally tunable planar polymer Bragg gratings with optical circulators. The gratings exhibit better than 45-dB reflection with no detectable out-of-band reflection. Apodization was utilized to achieve strong sidelobe suppression, and symmetric gratings with uniform strength across the core and cladding layers were used to minimize coupling to cladding modes. These OADMs have a high-bandwidth utilization (BWU) factor of 0.92, with a minimum channel spacing of 75 GHz. They are tunable at a rate of -0.256 nm//spl deg/C. Tuning over a 20-nm range was demonstrated with a single device.

Keywords

Bragg gratings; integrated optics; multiplexing equipment; optical circulators; optical communication equipment; optical images; optical polymers; optical tuning; optical waveguides; thermo-optical effects; apodization; broad tuning range; cladding layers; core layers; gratings; high-bandwidth utilization factor; minimum channel spacing; optical circulators; out-of-band reflection; single device; strong sidelobe suppression; symmetric gratings; thermally tunable planar polymer Bragg gratings; thermooptic planar polymer Bragg grating OADM; tunable; tunable optical add/drop multiplexers; uniform strength; Bragg gratings; Circulators; Optical add-drop multiplexers; Optical films; Optical filters; Optical polymers; Optical refraction; Optical tuning; Optical variables control; Optical waveguides;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.752544

Filename

752544