Patent ID: 6122417
Filing Date: 2000-09-19
Classification: G02B,H01S

Abstract:
A wavelength-division multiplexing (WDM) optical device for use in transmitting and receiving N different wavelengths of laser radiation, comprising:a first substrate;an array of wavelength-stepped Fabry-Perot filters in contact with the first substrate, wherein each filter has a central longitudinal axis;a first array of microlenses disposed on the first substrate, wherein each microlens has a center which is displaced from the central longitudinal axis of an associated Fabry-Perot filtera stepped-wavelength vertical cavity surface emitting laser (VCSEL) array optically coupled with the wavelength-stepped Fabry-Perot array of filters, wherein each VCSEL has a central vertical axis, and is tuned to transmit at least one of the N different wavelengths of laser radiation;a second substrate in contact with the stepped-wavelength VCSEL array; anda second array of microlenses disposed on the second substrate, wherein each microlens has a center which is offset from the central vertical axis of an associated VCSEL.