Characteristic analysis of resonant-cavity-enhanced (RCE) photodetectors

Design of Ultra Fast RCE Photodetectors for Optical Communications systems

“…It then follows that (Kishino, 1991), (Jervase, 1998) This expression is used in a constrained optimization procedure for the design of RCE photodetectors with maximum quantum efficiency. Equation 5 serves as a check on the optimized values (L 1 , L 2 , d) in whether they yield the maximum quantum efficiency.…”

“…In fact, the typical PIN photodiode configuration (Dentan, 1990) has been integrated in our proposed configuration for its simplicity and ease of fabrication as well as its realistic mathematical description. The expression for quantum efficiency for the RCE photodetector shown in Figure 1 will be derived following a similar approach to that used in (Kishino, 1991) and (Jervase, 1998). This technique is based on finding the reflectivities of the top and bottom mirrors separately and then using their values to determine the fields inside the cavity by considering the whole structure of the photodetector i.e.…”

“…Their quantum efficiency and optical bandwidth characteristics are of major importance in the design of fiber optic based data communication systems. A number of structures and design optimization techniques have been proposed in the literature to achieve high values for these two parameters (Kishino, 1991), (Unlu, 1992(Unlu, , 1995, (Tan, 1995), , (Tung, 1997), (Jervase, 1998(Jervase, , 2000. One of the promising types is the Resonant Cavity Enhanced (RCE) photodetector.…”

“…One of the promising types is the Resonant Cavity Enhanced (RCE) photodetector. In the RCE, the active region is placed inside a Fabry-Perot cavity between two mirrors made of quarter-wave stacks (QWS) to allow the signal light to have more than one absorbing path inside the active region (Kishino, 1991), (Unlu, 1992(Unlu, , 1995, (Tan, 1995), , (Tung, 1997), (Jervase, 1998(Jervase, , 2000, , (Ozbay, 1997). The resulting structure will need only a very thin absorbing intrinsic region to achieve high quantum efficiency as well as a high speed of response.…”

An approach to the design of highly selective resonant-cavity-enhanced photodetectors

“…1 The mirror reflectivities and reflectance phases are used to determine the light-field distribution inside the lossy cavity considering the whole RCE structure following the approach presented by Jervase et al 5 This is then used to derive the quantum efficiency and frequency response of the RCE photodetector.…”