发明名称 |
INTEGRATED OPTICAL PACKAGE FOR COUPLING OPTICAL FIBERS TO DEVICES WITH ASYMMETRIC LIGHT BEAMS |
摘要 |
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 (=6.mu.m in diameter) to a semiconductor (=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 buttcoupled 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.
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申请公布号 |
CA2092840(C) |
申请公布日期 |
1999.11.23 |
申请号 |
CA19932092840 |
申请日期 |
1993.03.29 |
申请人 |
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发明人 |
CHO, ALFRED YI;SIVCO, DEBORAH LEE;VAKHSHOORI, DARYOOSH |
分类号 |
G02B6/12;G02B6/30;G02B6/42;G02B27/09;H01S5/00;(IPC1-7):G02B6/12 |
主分类号 |
G02B6/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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