Pw. Tan et al., THEORETICAL-ANALYSIS OF MULTIPLE-PHASE-SHIFT-CONTROLLED DISTRIBUTED-FEEDBACK WAVELENGTH TUNABLE OPTICAL FILTERS, Microwave and optical technology letters, 8(2), 1995, pp. 72-75
A three-phase-shift-controlled wavelength tunable optical filter is pr
oposed. Theoretical calculation based on the transfer matrix method in
dicates a tuning range of more than 30 angstrom. The peak gain and ban
dwidth are almost constant during tuning. The side-mode suppression is
over 25 dB. (C) 1995 John Wiley & Sons, Inc.