Photorefractive phase conjugators
Article Abstract:
Phase conjugators produce a time-reversed replica of incident electromagnetic radiation. A review of a variety of optical phase conjugators using photorefractive materials is presented. These include self-pumped phase conjugators (SPPC), externally pumped phase conjugators (EPPC) and mutually pumped phase conjugators (MPPC). The unique property of phase reversal provides many novel device applications, including image restoration in optical fibers, phase conjugate fiber-optic gyros, phase-conjugate interferometers and image subtractors. The photorefractive effect and wave mixing in nonlinear media is discussed, as well as the various photorefractive phase conjugators.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1992
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A better statutory approach to whistle-blowing
Article Abstract:
Research studies conducted regarding whistle-blowing have revealed that the measures adopted by legislative authorities towards the issue are unnecessary. Authorities have assumed that whistleblowers are inclined to report illegal acts unless pressured from doing so due to fear. An alternative whistle-blowing model based on rewards and not on fear is proposed.
Publication Name: Business Ethics Quarterly
Subject: Philosophy and religion
ISSN: 1052-150X
Year: 1997
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At home with tax
Article Abstract:
Homeowners are able to get tax relief when they buy a house. Mortgage Interest Relief At Source (MIRAS) allows tax relief on interest on home loans up to 30,000 pounds sterling. The 20% relief will be cut to 15% from April 6, 1995. Homeowners who let out their property are taxed depending on whether they receive business income or investment income from it.
Publication Name: Which?
Subject: Consumer news and advice
ISSN: 0043-4841
Year: 1995
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