A single transverse mode semiconductor laser diode source is designed for employment in an optical transmission link comprising a transmitter module and a receiver module operable under uncooled conditions, i.e., without the need of costly cooling equipment, such as thermoelectric coolers. The optical...http://www.google.com.au/patents/US6122303?utm_source=gb-gplus-sharePatent US6122303 - Single transverse mode semiconductor laser for an optical transmission link
