Integrated optical package for coupling optical fibers to device

Details Integrated optical package for coupling optical fibers to device Integrated optical package for coupling optical fibers to device

1992-05-08

1993-11-23

Gonzalez, Frank

Optical waveguides

Integrated optical circuit

385 28, 385 31, 385 43, 385 49, 385 93, 385131, 385146, G02B 612

Patent

active

052651770

ABSTRACT:
This invention embodies an integrated optical package including an optical component having an asymmetric modal output, and a lens integrated with the component for coupling to another optical component having a large modal area. The coupling is achieved by the use of a Polymeric Elongated Waveguide Emulating (PEWE) lens. In the exemplary embodiment the first optical component is a modulator, and the other optical component is an optical fiber. A facet of the modulator is etched by reactive ion etching (RIE) which allows integration of the PEWE lens on a common substrate. The lens is manufactured using a polymer film on a dielectric cladding layer. The fabrication relies on the remelt and reflow properties of polymer films to provide a smooth adiabatic mode contraction from a circular (optical fiber) mode (.apprxeq.6 .mu.m in diameter) to a semiconductor mode (.apprxeq.1 .mu.m) over a length of 250 .mu.m. The PEWE lens permits coupling with an insertion loss of 0.5 dB and 80 percent coupling efficiency, even though the lens is butt-coupled to a fiber without any external lens. The PEWE lens allows the realization of better than 80 percent direct fiber butt-coupling efficiencies to semiconductor lasers, photodetectors, optical modulators, switches and amplifiers with a simultaneous order of magnitude relaxation of the alignment tolerances typically needed for the coupling of semiconductor devices with single-mode fibers.

REFERENCES:
patent: 4415227 (1983-11-01), Unger
patent: 4431261 (1984-02-01), Kozikowski
patent: 4666236 (1987-05-01), Mikami et al.
patent: 4744615 (1988-05-01), Fan et al.
patent: 4932989 (1990-06-01), Presby
patent: 5011254 (1991-04-01), Edwards et al.
patent: 5108201 (1992-04-01), Matsuura et al.
patent: 5140651 (1992-08-01), Soref et al.
M. Saruwatari et al. Applied Optics, "Semiconductor Laser to Mode Fiber Coupler", 1 Jun. 1979, vol. 18, No. 11, pp. 1847-1856.
V. S. Shah et al. J. of Lightwave Tech., "Efficient Power Coupling from a 980-nm, Broad-Area Laser . . . ", Sep. 1990, vol. 8, No. 9, pp. 1313-1318.

Affiliated with

Also associated with

Rating

Integrated optical package for coupling optical fibers to device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated optical package for coupling optical fibers to device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated optical package for coupling optical fibers to device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1856155